diff --git a/.github/workflows/scripts-unit-tests.yml b/.github/workflows/scripts-unit-tests.yml
new file mode 100644
index 0000000..d1578ab
--- /dev/null
+++ b/.github/workflows/scripts-unit-tests.yml
@@ -0,0 +1,30 @@
+name: scripts-unit-tests
+env:
+  PYTHON_VERSION: 3.11
+on:
+  pull_request:
+    paths:
+      - 'scripts/validate_metadata/**'
+jobs:
+  execute-scripts-unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Install test dependencies
+        run: |
+          pip install -r scripts/validate_metadata/requirements.txt
+
+      - name: Install Test dependencies
+        run: |
+          pip install -r scripts/validate_metadata/requirements.txt
+
+      - name: Run tests
+        run: pytest scripts/validate_metadata
diff --git a/.github/workflows/validate-metadata-schema.yml b/.github/workflows/validate-metadata-schema.yml
new file mode 100644
index 0000000..82e35c6
--- /dev/null
+++ b/.github/workflows/validate-metadata-schema.yml
@@ -0,0 +1,49 @@
+name: validate-metadata-schema
+env:
+  PYTHON_VERSION: 3.11
+  RETRIEVAL_SCRIPT_PATH: $GITHUB_WORKSPACE/.github/resources/scripts/get_items_for_validation.sh
+  VALIDATION_SCRIPT_PATH: $GITHUB_WORKSPACE/scripts/validate_metadata/validate_metadata.py
+on:
+  pull_request:
+    paths:
+      - 'components/**'
+      - 'pipelines/**'
+      - 'scripts/**'
+      - 'third_party/components/**'
+      - 'third_party/pipelines/**'
+
+jobs:
+  validate-metadata-schema:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v6
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Install Test dependencies
+        run: |
+          pip install -r scripts/validate_metadata/requirements.txt
+
+      - name: Retrieve new components and/or pipelines
+        id: get-new-items
+        run: ${{  env.RETRIEVAL_SCRIPT_PATH  }} "${{ github.event.pull_request.base.sha }}" "${{ github.event.pull_request.head.sha }}" validate_metadata
+
+      #ToDo: Utilize .github/scripts/find-changed-components-and-pipelines.sh script once merged in from https://github.com/kubeflow/pipelines-components/pull/7
+      - name: Validate new core/third-party components and/or pipelines 
+        if: ${{ steps.get-new-items.outputs.new_items_list != '' }}
+        run: |
+          NEW_ITEMS_ARRAY="${{ steps.get-new-items.outputs.new_items_list }}"
+
+          # Set IFS to a comma, so that the shell will split the string by commas.
+          IFS=','
+          
+          for item in $NEW_ITEMS_ARRAY; do
+            FILE_PATH="$GITHUB_WORKSPACE/$item"
+            echo "Processing item: $item"
+            python "${{  env.VALIDATION_SCRIPT_PATH  }}" --item $FILE_PATH
+          done
diff --git a/scripts/__init__.py b/scripts/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/validate_metadata/__init__.py b/scripts/validate_metadata/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/validate_metadata/requirements.txt b/scripts/validate_metadata/requirements.txt
new file mode 100644
index 0000000..fc9d9ca
--- /dev/null
+++ b/scripts/validate_metadata/requirements.txt
@@ -0,0 +1,3 @@
+PyYAML==6.0.3
+semver==3.0.4
+pytest==7.1.2
diff --git a/scripts/validate_metadata/test_data/directories_metadata/missing_metadata_file/OWNERS b/scripts/validate_metadata/test_data/directories_metadata/missing_metadata_file/OWNERS
new file mode 100644
index 0000000..fa71bd1
--- /dev/null
+++ b/scripts/validate_metadata/test_data/directories_metadata/missing_metadata_file/OWNERS
@@ -0,0 +1,2 @@
+approvers:
+- sample-approver
diff --git a/scripts/validate_metadata/test_data/directories_metadata/missing_owners_file/metadata.yaml b/scripts/validate_metadata/test_data/directories_metadata/missing_owners_file/metadata.yaml
new file mode 100644
index 0000000..7f0ac4d
--- /dev/null
+++ b/scripts/validate_metadata/test_data/directories_metadata/missing_owners_file/metadata.yaml
@@ -0,0 +1,22 @@
+tier: third_party
+name: happy-path-component
+stability: alpha | beta | stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5'
+    - name: Trainer
+      version: '>=2.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+  pytest: optional
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/directories_metadata/not_a_dir.txt b/scripts/validate_metadata/test_data/directories_metadata/not_a_dir.txt
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/validate_metadata/test_data/directories_metadata/valid/OWNERS b/scripts/validate_metadata/test_data/directories_metadata/valid/OWNERS
new file mode 100644
index 0000000..fa71bd1
--- /dev/null
+++ b/scripts/validate_metadata/test_data/directories_metadata/valid/OWNERS
@@ -0,0 +1,2 @@
+approvers:
+- sample-approver
diff --git a/scripts/validate_metadata/test_data/directories_metadata/valid/metadata.yaml b/scripts/validate_metadata/test_data/directories_metadata/valid/metadata.yaml
new file mode 100644
index 0000000..ac1065a
--- /dev/null
+++ b/scripts/validate_metadata/test_data/directories_metadata/valid/metadata.yaml
@@ -0,0 +1,21 @@
+name: component_valid
+tier: third_party
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '2.5.0'
+    - name: Trainer
+      version: '2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci.yaml
new file mode 100644
index 0000000..3e5258a
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci.yaml
@@ -0,0 +1,20 @@
+name: invalid-ci
+tier: core
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci: invalid-ci-value
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci_category.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci_category.yaml
new file mode 100644
index 0000000..ca2fb85
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci_category.yaml
@@ -0,0 +1,22 @@
+name: invalid-ci-category
+tier: core
+stability: stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+  invalid_ci_category: invalid_value
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci_dependency_probe.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci_dependency_probe.yaml
new file mode 100644
index 0000000..017be5b
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_ci_dependency_probe.yaml
@@ -0,0 +1,21 @@
+name: invalid-ci-dependency-probe
+tier: third_party
+stability: beta
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: invalid-probe-value
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependencies_category.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependencies_category.yaml
new file mode 100644
index 0000000..0c2d0f8
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependencies_category.yaml
@@ -0,0 +1,24 @@
+name: invalid-dependencies-category
+tier: core
+stability: beta
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+  invalid_dependency_category:
+    - name: Invalid Dependency
+      version: "1.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependencies_type.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependencies_type.yaml
new file mode 100644
index 0000000..0dd3447
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependencies_type.yaml
@@ -0,0 +1,13 @@
+name: invalid-dependencies-type
+tier: third_party
+stability: alpha
+dependencies: "invalid-dependencies-type"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependency_semantic_versioning.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependency_semantic_versioning.yaml
new file mode 100644
index 0000000..510e6aa
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_dependency_semantic_versioning.yaml
@@ -0,0 +1,21 @@
+name: invalid-dependency-semantic-versioning
+tier: third_party
+stability: stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_links.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_links.yaml
new file mode 100644
index 0000000..bdf0168
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_links.yaml
@@ -0,0 +1,19 @@
+name: invalid-links
+tier: core
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links: https://invalid-link
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_name.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_name.yaml
new file mode 100644
index 0000000..b5c661e
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_name.yaml
@@ -0,0 +1,21 @@
+name: 2
+tier: core
+stability: beta
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_stability.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_stability.yaml
new file mode 100644
index 0000000..846bbd3
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_stability.yaml
@@ -0,0 +1,21 @@
+name: invalid-stability
+tier: third_party
+stability: invalid-stability
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_tag_array_type.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_tag_array_type.yaml
new file mode 100644
index 0000000..43f3fb2
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_tag_array_type.yaml
@@ -0,0 +1,21 @@
+name: invalid-tag-array-type
+tier: core
+stability: stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - 1
+  - 2
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_tag_type.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_tag_type.yaml
new file mode 100644
index 0000000..ec98443
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_tag_type.yaml
@@ -0,0 +1,19 @@
+name: invalid-tag-type
+tier: core
+stability: stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags: "tags"
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_tier.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_tier.yaml
new file mode 100644
index 0000000..e20be68
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_tier.yaml
@@ -0,0 +1,21 @@
+name: invalid-tier
+tier: invalid_tier
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/invalid_verified_date.yaml b/scripts/validate_metadata/test_data/metadata/invalid/invalid_verified_date.yaml
new file mode 100644
index 0000000..7f15846
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/invalid_verified_date.yaml
@@ -0,0 +1,21 @@
+name: invalid-verified-date
+tier: core
+stability: beta
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2024-11-20T0
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/missing_dependencies.yaml b/scripts/validate_metadata/test_data/metadata/invalid/missing_dependencies.yaml
new file mode 100644
index 0000000..71deeae
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/missing_dependencies.yaml
@@ -0,0 +1,12 @@
+name: missing-dependencies
+tier: third_party
+stability: stable
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/missing_kfp_dependency.yaml b/scripts/validate_metadata/test_data/metadata/invalid/missing_kfp_dependency.yaml
new file mode 100644
index 0000000..b21cdf0
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/missing_kfp_dependency.yaml
@@ -0,0 +1,19 @@
+name: missing-kfp-dependency
+tier: core
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/missing_name.yaml b/scripts/validate_metadata/test_data/metadata/invalid/missing_name.yaml
new file mode 100644
index 0000000..5f26fc1
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/missing_name.yaml
@@ -0,0 +1,20 @@
+tier: core
+stability: stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/missing_stability.yaml b/scripts/validate_metadata/test_data/metadata/invalid/missing_stability.yaml
new file mode 100644
index 0000000..2599ad0
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/missing_stability.yaml
@@ -0,0 +1,20 @@
+name: missing-stability
+tier: third_party
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/missing_tier.yaml b/scripts/validate_metadata/test_data/metadata/invalid/missing_tier.yaml
new file mode 100644
index 0000000..598baec
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/missing_tier.yaml
@@ -0,0 +1,20 @@
+name: missing-tier
+stability: beta
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/missing_verified_date.yaml b/scripts/validate_metadata/test_data/metadata/invalid/missing_verified_date.yaml
new file mode 100644
index 0000000..f0ceb1e
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/missing_verified_date.yaml
@@ -0,0 +1,20 @@
+name: missing-verified-date
+tier: core
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/invalid/passed_verified_date.yaml b/scripts/validate_metadata/test_data/metadata/invalid/passed_verified_date.yaml
new file mode 100644
index 0000000..bb9a320
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/invalid/passed_verified_date.yaml
@@ -0,0 +1,21 @@
+name: passed-verified-date
+tier: third_party
+stability: stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2024-11-10T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/valid/custom_links_category.yaml b/scripts/validate_metadata/test_data/metadata/valid/custom_links_category.yaml
new file mode 100644
index 0000000..cf353da
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/custom_links_category.yaml
@@ -0,0 +1,22 @@
+name: links-subfield
+tier: third_party
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  custom_link_category: ""
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/valid/excluding_ci.yaml b/scripts/validate_metadata/test_data/metadata/valid/excluding_ci.yaml
new file mode 100644
index 0000000..a8cbdd5
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/excluding_ci.yaml
@@ -0,0 +1,16 @@
+name: test_component
+tier: third_party
+stability: beta
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '2.5.0'
+    - name: Trainer
+      version: '2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+lastVerified: 2025-03-15T00:00:00Z
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/valid/excluding_ci_dependency_probe.yaml b/scripts/validate_metadata/test_data/metadata/valid/excluding_ci_dependency_probe.yaml
new file mode 100644
index 0000000..0b463d9
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/excluding_ci_dependency_probe.yaml
@@ -0,0 +1,16 @@
+name: excluding-ci-dependency-probe
+tier: third_party
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '2.5.0'
+    - name: Trainer
+      version: '2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+lastVerified: 2025-03-15T00:00:00Z
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/valid/excluding_ext_dependencies.yaml b/scripts/validate_metadata/test_data/metadata/valid/excluding_ext_dependencies.yaml
new file mode 100644
index 0000000..3f59747
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/excluding_ext_dependencies.yaml
@@ -0,0 +1,15 @@
+name: test_component
+tier: core
+stability: beta
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '2.5.0'
+    - name: Trainer
+      version: '2.0.0'
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/valid/excluding_links.yaml b/scripts/validate_metadata/test_data/metadata/valid/excluding_links.yaml
new file mode 100644
index 0000000..60a4483
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/excluding_links.yaml
@@ -0,0 +1,15 @@
+name: test_component
+tier: third_party
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '2.5.0'
+    - name: Trainer
+      version: '2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
diff --git a/scripts/validate_metadata/test_data/metadata/valid/excluding_tags.yaml b/scripts/validate_metadata/test_data/metadata/valid/excluding_tags.yaml
new file mode 100644
index 0000000..248d727
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/excluding_tags.yaml
@@ -0,0 +1,21 @@
+name: test_component
+tier: core
+stability: stable
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '2.5.0'
+    - name: Trainer
+      version: '2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/valid/missing_ci_dependency_probe.yaml b/scripts/validate_metadata/test_data/metadata/valid/missing_ci_dependency_probe.yaml
new file mode 100644
index 0000000..7f3e22f
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/missing_ci_dependency_probe.yaml
@@ -0,0 +1,19 @@
+tier: core
+name: missing-ci-dependency-probe
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '>=2.5.0'
+    - name: Trainer
+      version: '>=2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+tags:
+  - training
+  - evaluation
+lastVerified: 2025-03-15T00:00:00Z
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/metadata/valid/valid_metadata.yaml b/scripts/validate_metadata/test_data/metadata/valid/valid_metadata.yaml
new file mode 100644
index 0000000..aad3b09
--- /dev/null
+++ b/scripts/validate_metadata/test_data/metadata/valid/valid_metadata.yaml
@@ -0,0 +1,18 @@
+name: test_component
+tier: third_party
+stability: alpha
+dependencies:
+  kubeflow:
+    - name: Pipelines
+      version: '2.5.0'
+    - name: Trainer
+      version: '2.0.0'
+  external_services:
+    - name: Argo Workflows
+      version: "3.6.0"
+lastVerified: 2025-03-15T00:00:00Z
+ci:
+  skip_dependency_probe: false
+links:
+  documentation: https://kubeflow.org/components/happy-path-component
+  issue_tracker: https://github.com/kubeflow/kfp-components/issues
diff --git a/scripts/validate_metadata/test_data/owners/invalid/owners_empty.txt b/scripts/validate_metadata/test_data/owners/invalid/owners_empty.txt
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/validate_metadata/test_data/owners/invalid/owners_missing_approvers.txt b/scripts/validate_metadata/test_data/owners/invalid/owners_missing_approvers.txt
new file mode 100644
index 0000000..4a6318f
--- /dev/null
+++ b/scripts/validate_metadata/test_data/owners/invalid/owners_missing_approvers.txt
@@ -0,0 +1,2 @@
+reviewers:
+- sample-reviewer
diff --git a/scripts/validate_metadata/test_data/owners/invalid/owners_typo_approvers.txt b/scripts/validate_metadata/test_data/owners/invalid/owners_typo_approvers.txt
new file mode 100644
index 0000000..576effc
--- /dev/null
+++ b/scripts/validate_metadata/test_data/owners/invalid/owners_typo_approvers.txt
@@ -0,0 +1,2 @@
+approver:
+- sample-approver
diff --git a/scripts/validate_metadata/test_data/owners/valid/owners_approvers_and_reviewer.txt b/scripts/validate_metadata/test_data/owners/valid/owners_approvers_and_reviewer.txt
new file mode 100644
index 0000000..50efde0
--- /dev/null
+++ b/scripts/validate_metadata/test_data/owners/valid/owners_approvers_and_reviewer.txt
@@ -0,0 +1,5 @@
+approvers:
+- sample-approver
+
+reviewers:
+- sample-reviewer
diff --git a/scripts/validate_metadata/test_data/owners/valid/owners_multiple_approvers.txt b/scripts/validate_metadata/test_data/owners/valid/owners_multiple_approvers.txt
new file mode 100644
index 0000000..09de636
--- /dev/null
+++ b/scripts/validate_metadata/test_data/owners/valid/owners_multiple_approvers.txt
@@ -0,0 +1,3 @@
+approvers:
+- sample-approver
+- sample-approver-2
diff --git a/scripts/validate_metadata/test_data/owners/valid/owners_single_approver.txt b/scripts/validate_metadata/test_data/owners/valid/owners_single_approver.txt
new file mode 100644
index 0000000..0037369
--- /dev/null
+++ b/scripts/validate_metadata/test_data/owners/valid/owners_single_approver.txt
@@ -0,0 +1,2 @@
+approvers:
+- sample-approver
\ No newline at end of file
diff --git a/scripts/validate_metadata/validate_metadata.py b/scripts/validate_metadata/validate_metadata.py
new file mode 100644
index 0000000..316a390
--- /dev/null
+++ b/scripts/validate_metadata/validate_metadata.py
@@ -0,0 +1,317 @@
+import argparse
+import os
+import sys
+from itertools import pairwise
+
+import yaml
+from datetime import datetime, timezone
+from pathlib import Path
+import logging
+
+from semver import Version
+
+# The following ordered fields are required in a metadata.yaml file.
+REQUIRED_FIELDS = ["name", "tier", "stability", "dependencies", "lastVerified"]
+# The following fields are optional in a metadata.yaml file.'
+OPTIONAL_FIELDS = ["tags", "ci", "links"]
+# 'Tier' must be 'core' or 'third-party'.
+TIER_OPTIONS = ["core", "third_party"]
+# 'Stability' must be 'alpha', 'beta', or 'stable'.
+STABILITY_OPTIONS = ["alpha", "beta", "stable"]
+# 'Dependencies' must contain 'kubeflow' and can contain 'external_services'.
+DEPENDENCIES_FIELDS = ["kubeflow", "external_services"]
+# A given dependency must contain 'name' and 'version' fields.
+DEPENDENCY=["name", "version"]
+# Comparison operators for dependency versions.
+COMPARISON = {">=", "<=", "=="}
+
+OWNERS="OWNERS"
+METADATA="metadata.yaml"
+
+class ValidationError(Exception):
+    """Custom exception for validation errors that should be displayed
+    without traceback and can take a custom message.
+    """
+    def __init__(self, message: str = "A validation error occurred."):
+        # Call the base class constructor with the message
+        super().__init__(message)
+
+        # Store the message in an attribute (optional, but good practice)
+        self.message = message
+
+def parse_args() -> argparse.Namespace:
+    """Parse and validate command-line arguments.
+
+    Returns:
+        argParse.Namespace: Parsed and validated arguments.
+    """
+    parser = argparse.ArgumentParser(
+        description="Validate metadata schema for Kubeflow Pipelines pipelines/components",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        epilog="""
+  # For example, from project root:
+  python -m scripts.validate_metadata --dir components/data_processing/sample_component
+        """
+    )
+
+    parser.add_argument(
+        '--dir',
+        type=validate_dir,
+        required=True,
+        help='Path to the component or pipeline directory (must contain OWNERS and metadata.yaml files)'
+    )
+
+    return parser.parse_args()
+
+def validate_dir(path: str) -> Path:
+    """Validate that the input path is a valid directory and contains required files.
+
+    Args:
+        path: String representation of the path to the component or pipeline directory.
+
+    Returns:
+        Path: Validated Path object to the component or pipeline directory.
+
+    Raises:
+        argparse.ArgumentTypeError: If validation fails.
+    """
+    path = Path(path)
+    print(os.getcwd())
+    if not path.exists():
+        raise argparse.ArgumentTypeError("Directory '{}' does not exist".format(path))
+
+    if not path.is_dir():
+        raise argparse.ArgumentTypeError("'{}' is not a directory".format(path))
+
+    file_path = path / OWNERS
+    if not file_path.exists():
+        raise argparse.ArgumentTypeError("{} does not contain an {} file".format(path, OWNERS))
+
+    metadata_file = path / METADATA
+    if not metadata_file.exists():
+        raise argparse.ArgumentTypeError("'{}' does not contain a {} file".format(path, METADATA))
+
+    return path
+
+def validate_owners_file(filepath: Path):
+    """Validate that the OWNERS file contains at least one approver under the 'approvers' heading.
+
+    Args:
+        filepath: Path object representing the filepath to the OWNERS file.
+
+    Raises:
+        ValidationError: If filepath input is not a file, heading 'approvers:' is missing, or no approvers are listed.
+    """
+    if not filepath.is_file():
+        raise ValidationError("{} is not a valid filepath.".format(filepath))
+
+    with open(filepath) as f:
+        for line, next_line in pairwise(f):
+            if line.startswith("approvers:") and next_line.startswith("-") and len(next_line) > 2:
+                logging.info("OWNERS file at {} contains at least one approver under heading 'approvers:'.".format(filepath))
+                return
+
+    # If this line is reached, no approvers were found.
+    raise ValidationError("OWNERS file at {} requires 1+ approver under heading 'approvers:'.".format(filepath))
+
+def validate_metadata_yaml(filepath: Path) -> bool:
+    """Validate that the input filepath represents a metadata.yaml file with a valid schema.
+
+    Args:
+        filepath: Path object representing the filepath to the metadata.yaml file.
+
+    Raise:
+        ValidationError: If 'lastVerified' empty, or validate_date_verified() or validate_required_fields() fails.
+    """
+    if not filepath.is_file():
+        raise ValidationError("{} is not a valid filepath.".format(filepath))
+    with open(filepath) as f:
+        metadata = yaml.safe_load(f)
+
+        # Validate metadata.yaml has been verified within one year of the current date.
+        if "lastVerified" not in metadata:
+            raise ValidationError("Metadata at {} has corresponding metadata.yaml with no 'lastVerified' value.".format(filepath))
+
+        last_verified = metadata.get("lastVerified")
+        if not validate_date_verified(last_verified):
+            raise ValidationError("Metadata at {} has corresponding metadata.yaml with invalid 'lastVerified' value: {}.".format(filepath, last_verified))
+
+        # Validate required fields and their corresponding values.
+        validate_required_fields(metadata)
+
+def validate_date_verified(last_verified: datetime) -> bool:
+    """Validate that the input date is RFC-3339-formatted and within 1 year of the current date.
+
+    Args:
+        last_verified: Input datetime date to be validated.
+
+    Returns:
+        bool: True if the input date is valid, False otherwise.
+
+    Examples:
+        '2025-03-15T00:00:00Z'  -> True [As of November 2025]
+        '2025-03-15'            -> False
+        '2024-03-15T00:00:00Z'  -> False
+    """
+    # Validate input date formatting.
+    if not isinstance(last_verified, datetime):
+        logging.error("'lastVerified' should be format YYYY-MM-DDT00:00:00Z, but instead is: {}.".format(last_verified))
+        return False
+    # Validate input date to be within 1 year of the current date.
+    today = datetime.now(timezone.utc)
+    delta = abs((today - last_verified).days)
+    if delta >= 365:
+        logging.error("'lastVerified' should be within 1 year of current date, but is {} days over.".format(delta))
+        return False
+    return True
+
+def validate_required_fields(metadata: dict):
+    """Validates that all required fields are present in the input dictionary and have valid values,
+    and that no invalid fields are present.
+
+    Args:
+        metadata: dictionary object containing nested metadata fields.
+
+    Raises:
+        ValidationError: If validation fails.
+    """
+    # Convert metadata keys to a list for comparison purposes.
+    input_metadata_fields = list(metadata.keys())
+    # Optional fields should not be validated against required fields. Remove optional fields for this check.
+    for field in OPTIONAL_FIELDS:
+        if field in input_metadata_fields:
+            input_metadata_fields.remove(field)
+
+    # Retrieve name name.
+    name = metadata.get("name")
+    if name is None:
+        raise ValidationError("Missing required field 'name' in {}.".format(METADATA))
+    if not isinstance(name, str):
+        raise ValidationError("{} value identified in field 'name' in {}: '{}'. Value for 'name' must be string.".format(type(name).__name__, METADATA, name))
+
+    # Convert metadata keys to a set and compare against REQUIRED_FIELDS set.
+    input_fields_set = set(input_metadata_fields)
+    required_fields_set = set(REQUIRED_FIELDS)
+    if required_fields_set != input_fields_set:
+        missing_fields = required_fields_set - input_fields_set
+        if len(missing_fields) > 0:
+            raise ValidationError("Missing required field(s) in {} for '{}': {}.".format(METADATA, name, missing_fields))
+        extra_fields = input_fields_set - required_fields_set
+        if len(extra_fields) > 0:
+            raise ValidationError("Unexpected field(s) in {} for '{}': {}.".format(METADATA, name, extra_fields))
+    # Compare input fields against REQUIRED FIELDS as lists to verify elements are ordered correctly.
+    if list(input_metadata_fields) != REQUIRED_FIELDS:
+        raise ValidationError("Field(s) located incorrectly in {} for '{}'. Expected order is {}.".format(METADATA, name, REQUIRED_FIELDS))
+
+    # Validate field values.
+    for field in metadata:
+        value_type = type(metadata.get(field)).__name__
+
+        if field == "tier":
+            tier_val = metadata.get("tier")
+            if tier_val not in TIER_OPTIONS:
+                raise ValidationError("Invalid 'tier' value in {} for '{}': '{}'. Expected a scalar string from the following options: {}.".format(METADATA, name, tier_val, TIER_OPTIONS))
+
+        elif field == "stability":
+            stability_val = metadata.get("stability")
+            if stability_val not in STABILITY_OPTIONS:
+                raise ValidationError("Invalid 'stability' value in {} for '{}': '{}'. Expected one of: {}.".format(METADATA, name, stability_val, STABILITY_OPTIONS))
+
+        elif field == "dependencies":
+            # Dependencies should be a dictionary.
+            dependency_val = metadata.get("dependencies")
+            if not isinstance(dependency_val, dict):
+                raise ValidationError("{} value identified for field 'dependencies' in {} for '{}'. Value must be array.".format(value_type, METADATA, name))
+            dependency_types = set(dependency_val.keys())
+
+            # Dependencies should contain 'kubeflow' and can contain 'external_services'.
+            if not (dependency_types == {"kubeflow"} or dependency_types == {"kubeflow", "external_services"}):
+                raise ValidationError("The following field(s) were found in dependencies: {}. Expected {}.".format(list(dependency_val.keys()), DEPENDENCIES_FIELDS))
+
+            # Kubeflow Pipelines is a required dependency.
+            kf_dependencies = dependency_val.get("kubeflow")
+            ext_dependencies = dependency_val.get("external_services")
+            if not isinstance(kf_dependencies, list) or (ext_dependencies is not None and not isinstance(ext_dependencies, list)):
+                raise ValidationError("Dependency sub-types for '{}' should contain lists but instead are {} and {}.".format(name, type(kf_dependencies), type(ext_dependencies)))
+            kfp_present = any(d.get('name') == 'Pipelines' for d in kf_dependencies)
+            if not kfp_present:
+                raise ValidationError("{} for '{}' is missing Kubeflow Pipelines dependency.".format(METADATA, name))
+
+            # Dependency versions must be correctly formatted by semantic versioning.
+            invalid_dependencies = get_invalid_versions(kf_dependencies) + get_invalid_versions(ext_dependencies)
+            if len(invalid_dependencies) > 0:
+                raise ValidationError("{} for '{}' contains one or more dependencies with invalid semantic versioning: {}.".format(METADATA, name, invalid_dependencies))
+
+        elif field == "tags":
+            tags_val = metadata.get("tags")
+            if not (isinstance(tags_val, list)):
+                raise ValidationError("{} value identified in field 'tags' in {} for '{}'. Value must be string array.".format(value_type, METADATA, name))
+            if not all(isinstance(item, str) for item in tags_val):
+                raise ValidationError("The following tags in {} for '{}': {}. Expected an array of scalar strings.".format(METADATA, name, tags_val))
+        elif field == "ci":
+            ci_val = metadata.get("ci")
+            if not isinstance(ci_val, dict):
+                raise ValidationError("{} value identified for field 'ci' in {} for '{}'. Value must be dictionary.".format(value_type, METADATA, name))
+            keys = set(ci_val.keys())
+            if not (keys == {"skip_dependency_probe"}):
+                raise ValidationError("The following field(s) were found in field 'ci' in {} for '{}': {}. Only field 'skip_dependency_probe' is valid.".format(METADATA, name, list(ci_val.keys())))
+            probe = ci_val.get("skip_dependency_probe")
+            if probe is not None and not isinstance(probe, bool):
+                raise ValidationError("{} expects a boolean value for skip_dependency_probe but {} value provided: '{}'.".format(METADATA, type(probe).__name__, probe))
+
+        elif field == "links":
+            links_value = metadata.get("links")
+            if not isinstance(links_value, dict):
+                raise ValidationError("{} value identified in field 'links' in {} for '{}'. Value must be dictionary.".format(value_type, METADATA, name))
+
+def get_invalid_versions(dependencies: list[dict]) -> list[dict]:
+    """Return a list of the input dependencies that contain invalid semantic versioning.
+
+    Args:
+        dependencies: list[dict] of dependencies to be validated
+
+    Return:
+        dependencies: list[dict] of invalid dependencies
+    """
+    if dependencies is None:
+        return []
+    invalid : list[dict] = []
+    for dependency in dependencies:
+        version = dependency.get("version")
+        # If the dependency version is null or non-string, it is invalid.
+        if version is None or not isinstance(version, str):
+            invalid.append(dependency)
+        # Strip leading '==', '>=' or '<=' from dependency version, if applicable.
+        if len(version) > 1 and version[:2] in COMPARISON:
+            version = version[2:]
+        if not Version.is_valid(version):
+            invalid.append(dependency)
+    return invalid
+
+def main():
+    """Main entry point for the CLI."""
+    args = parse_args()
+    input_dir = args.component
+
+    # Validate OWNERS
+    try:
+        owners_file_path = input_dir / OWNERS
+        validate_owners_file(owners_file_path)
+    except ValidationError as e:
+        logging.error("Validation Error: %s", e)
+        sys.exit(1)
+
+    # Validate metadata.yaml
+    try:
+        metadata_file_path = input_dir / METADATA
+        validate_metadata_yaml(metadata_file_path)
+    except ValidationError as e:
+        logging.error("Validation Error: %s", e)
+        sys.exit(1)
+
+    # Validation successful.
+    logging.info("Validation successful for {}.".format(input_dir))
+    print("Validation successful for {}.".format(input_dir))
+
+if __name__ == "__main__":
+    main()
diff --git a/scripts/validate_metadata/validate_metadata_test.py b/scripts/validate_metadata/validate_metadata_test.py
new file mode 100644
index 0000000..2bcac6a
--- /dev/null
+++ b/scripts/validate_metadata/validate_metadata_test.py
@@ -0,0 +1,273 @@
+import argparse
+import builtins
+import re
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Optional
+
+import pytest
+
+from scripts.validate_metadata import validate_metadata
+from scripts.validate_metadata.validate_metadata import ValidationError
+
+INVALID_METADATA_DIR = "scripts/validate_metadata/test_data/metadata/invalid/"
+VALID_METADATA_DIR = "scripts/validate_metadata/test_data/metadata/valid/"
+INVALID_OWNERS_DIR = "scripts/validate_metadata/test_data/owners/invalid/"
+VALID_OWNERS_DIR = "scripts/validate_metadata/test_data/owners/valid/"
+TEST_DIRS= "scripts/validate_metadata/test_data/directories_metadata/"
+
+@dataclass
+class ValidateMetadataTestFile:
+    file_name: str
+    expected_exception: Optional[builtins.type[Exception]]
+    expected_exception_msg: Optional[str]
+
+@dataclass
+class ValidateMetadataTestDir:
+    dir_name: str
+    expected_exception: Optional[builtins.type[Exception]]
+    expected_exception_msg: Optional[str]
+
+@pytest.mark.parametrize(
+    'test_data', [
+        ValidateMetadataTestFile(
+            file_name='valid_metadata.yaml',
+            expected_exception=None,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestFile(
+            file_name='excluding_tags.yaml',
+            expected_exception=None,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestFile(
+            file_name='excluding_ext_dependencies.yaml',
+            expected_exception=None,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestFile(
+            file_name='excluding_ci.yaml',
+            expected_exception=None,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestFile(
+            file_name='excluding_ci_dependency_probe.yaml',
+            expected_exception=None,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestFile(
+            file_name='excluding_links.yaml',
+            expected_exception=None,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestFile(
+            file_name='custom_links_category.yaml',
+            expected_exception=None,
+            expected_exception_msg=""
+        ),
+    ]
+)
+def test_validate_metadata_yaml_success(test_data):
+    valid_yaml = validate_metadata.validate_metadata_yaml(filepath=Path(VALID_METADATA_DIR + test_data.file_name))
+    # Asserts that no exceptions have been raised.
+    assert True
+
+@pytest.mark.parametrize(
+    'test_data', [
+        ValidateMetadataTestFile(
+            file_name='this_file_does_not_exist.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("scripts/validate_metadata/test_data/metadata/invalid/this_file_does_not_exist.yaml is not a valid filepath.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='missing_verified_date.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Metadata at scripts/validate_metadata/test_data/metadata/invalid/missing_verified_date.yaml has corresponding metadata.yaml with no 'lastVerified' value.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_verified_date.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Metadata at scripts/validate_metadata/test_data/metadata/invalid/invalid_verified_date.yaml has corresponding metadata.yaml with invalid 'lastVerified' value: 2024-11-20T0.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='passed_verified_date.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Metadata at scripts/validate_metadata/test_data/metadata/invalid/passed_verified_date.yaml has corresponding metadata.yaml with invalid 'lastVerified' value: 2024-11-10 00:00:00+00:00.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='missing_name.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Missing required field 'name' in metadata.yaml.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_name.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("int value identified in field 'name' in metadata.yaml: '2'. Value for 'name' must be string.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='missing_tier.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Missing required field(s) in metadata.yaml for 'missing-tier': {'tier'}.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_tier.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Invalid 'tier' value in metadata.yaml for 'invalid-tier': 'invalid_tier'. Expected a scalar string from the following options: ['core', 'third_party'].")
+        ),
+        ValidateMetadataTestFile(
+            file_name='missing_stability.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Missing required field(s) in metadata.yaml for 'missing-stability': {'stability'}.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_stability.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Invalid 'stability' value in metadata.yaml for 'invalid-stability': 'invalid-stability'. Expected one of: ['alpha', 'beta', 'stable'].")),
+        ValidateMetadataTestFile(
+            file_name='missing_dependencies.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("Missing required field(s) in metadata.yaml for 'missing-dependencies': {'dependencies'}.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_dependencies_type.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("str value identified for field 'dependencies' in metadata.yaml for 'invalid-dependencies-type'. Value must be array.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_dependencies_category.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("The following field(s) were found in dependencies: ['kubeflow', 'external_services', 'invalid_dependency_category']. Expected ['kubeflow', 'external_services'].")
+        ),
+        ValidateMetadataTestFile(
+            file_name='missing_kfp_dependency.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("metadata.yaml for 'missing-kfp-dependency' is missing Kubeflow Pipelines dependency.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_dependency_semantic_versioning.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("metadata.yaml for 'invalid-dependency-semantic-versioning' contains one or more dependencies with invalid semantic versioning: [{'name': 'Argo Workflows', 'version': '3.6'}].")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_tag_type.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("str value identified in field 'tags' in metadata.yaml for 'invalid-tag-type'. Value must be string array.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_tag_array_type.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("The following tags in metadata.yaml for 'invalid-tag-array-type': [1, 2]. Expected an array of scalar strings.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_ci.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("str value identified for field 'ci' in metadata.yaml for 'invalid-ci'. Value must be dictionary.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_ci_category.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("The following field(s) were found in field 'ci' in metadata.yaml for 'invalid-ci-category': ['skip_dependency_probe', 'invalid_ci_category']. Only field 'skip_dependency_probe' is valid")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_ci_dependency_probe.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("metadata.yaml expects a boolean value for skip_dependency_probe but str value provided: 'invalid-probe-value'.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='invalid_links.yaml',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("str value identified in field 'links' in metadata.yaml for 'invalid-links'. Value must be dictionary.")
+        ),
+    ])
+def test_validate_metadata_yaml_failure(test_data):
+    with pytest.raises(test_data.expected_exception,
+                       match=test_data.expected_exception_msg):
+        validate_metadata.validate_metadata_yaml(filepath=Path(INVALID_METADATA_DIR + test_data.file_name))
+
+@pytest.mark.parametrize(
+    'test_data', [
+        ValidateMetadataTestFile(
+            file_name='owners_single_approver.txt',
+            expected_exception=None,
+            expected_exception_msg=None
+        ),
+        ValidateMetadataTestFile(
+            file_name='owners_multiple_approvers.txt',
+            expected_exception=None,
+            expected_exception_msg=None
+        ),
+        ValidateMetadataTestFile(
+            file_name='owners_approvers_and_reviewer.txt',
+            expected_exception=None,
+            expected_exception_msg=None
+        )
+    ]
+)
+def test_validate_owners_yaml_success(test_data):
+    validate_metadata.validate_owners_file(filepath=Path(VALID_OWNERS_DIR + test_data.file_name))
+    # Asserts that no exceptions have been raised.
+    assert True
+
+@pytest.mark.parametrize(
+    'test_data', [
+        ValidateMetadataTestFile(
+            file_name='owners_empty.txt',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("OWNERS file at scripts/validate_metadata/test_data/owners/invalid/owners_empty.txt requires 1+ approver under heading 'approvers:'.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='owners_missing_approvers.txt',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("OWNERS file at scripts/validate_metadata/test_data/owners/invalid/owners_missing_approvers.txt requires 1+ approver under heading 'approvers:'.")
+        ),
+        ValidateMetadataTestFile(
+            file_name='owners_typo_approvers.txt',
+            expected_exception=ValidationError,
+            expected_exception_msg=re.escape("OWNERS file at scripts/validate_metadata/test_data/owners/invalid/owners_typo_approvers.txt requires 1+ approver under heading 'approvers:'.")
+        )
+    ]
+)
+def test_validate_owners_yaml_failure(test_data):
+    with pytest.raises(ValidationError,
+                       match=test_data.expected_exception_msg):
+        validate_metadata.validate_owners_file(filepath=Path(INVALID_OWNERS_DIR + test_data.file_name))
+
+@pytest.mark.parametrize(
+    'test_data', [
+        ValidateMetadataTestDir(
+            dir_name='missing',
+            expected_exception=argparse.ArgumentTypeError,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestDir(
+            dir_name='dir_is_not_dir.txt',
+            expected_exception=argparse.ArgumentTypeError,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestDir(
+            dir_name='missing_owners_file',
+            expected_exception=argparse.ArgumentTypeError,
+            expected_exception_msg=""
+        ),
+        ValidateMetadataTestDir(
+            dir_name='missing_metadata_file',
+            expected_exception=argparse.ArgumentTypeError,
+            expected_exception_msg=""
+        )
+    ])
+def test_validate_metadata_files_in_dir_failure(test_data):
+    with pytest.raises(test_data.expected_exception,
+                       match=test_data.expected_exception_msg):
+        validate_metadata.validate_dir(path=TEST_DIRS + test_data.dir_name)
+
+@pytest.mark.parametrize(
+    'test_data', [
+        ValidateMetadataTestDir(
+            dir_name='valid',
+            expected_exception=None,
+            expected_exception_msg=None
+        )
+    ])
+def test_validate_metadata_files_in_dir_success(test_data):
+    files_present = validate_metadata.validate_dir(path=TEST_DIRS + test_data.dir_name)
+    assert files_present == Path('scripts/validate_metadata/test_data/directories_metadata/valid')