WAF SEO change tests (#1262)

This PR implements some tests for SEO changes to WAF.

Author: cjobermaier

content/well-architected-framework/docs/docs/define-and-automate-processes/deploy/zero-downtime-deployments/infrastructure.mdx

@@ -1,19 +1,17 @@
 ---
-page_title: Zero-downtime infrastructure deployments
-description: Implement blue/green deployment strategies for infrastructure changes to ensure zero downtime and enable rapid rollback capabilities.
+page_title: Deploy blue green infrastructure for zero-downtime
+description: Learn how to implement blue green deployment strategies for zero-downtime infrastructure changes.
 ---
 
-# Zero-downtime infrastructure deployments
+# Deploy blue green infrastructure
 
-Properly managing changes to your infrastructure, such as updating network policies or upgrading your Kubernetes cluster, is important to ensure the reliability of your upgraded application and achieve zero-downtime deployments. 
+Infrastructure changes like server or network policy updates can cause costly downtime if not managed correctly. Blue green deployment strategies lower this risk by maintaining two identical production environments, allowing you to test changes before switching traffic. This guide explains what blue green infrastructure is and how Terraform can help you implement it.
 
-Blue/green deployment limits downtime and reduces risk by maintaining two identical production environments — one live, one idle. You deploy to the idle environment, test thoroughly, then switch traffic over. If problems occur, you can roll back immediately by switching traffic back. 
+## What is blue green infrastructure
 
-## Blue/green infrastructure
+Blue green deployments require two identical application infrastructure environments, a method for deploying your application to your two environments, and a way to route your traffic between them.
 
-Blue/green deployments require two identical application infrastructure environments, a method for deploying your application to your two environments, and a way to route your traffic between them.
-
-The following diagram shows a basic blue/green deployment. The blue environment is the infrastructure where your current application runs. The green environment is identical, except that you have upgraded it to host the new version of the application.
+The following diagram shows a basic blue green deployment. The blue environment is the infrastructure where your current application runs. The green environment is identical, except that you have upgraded it to host the new version of the application.
 
 ![Typical blue green deployment. The green environment runs in parallel with the blue environment. When you are ready to switch to the green environment the load balancer directs traffic to the green environment.](/img/well-architected-framework/blue-green-canary-tests-deployments/blue-green-deployment.png)
 
@@ -22,7 +20,9 @@ You set up the blue and green environments as similar as possible. Infrastructur
 IaC makes your operations more cost-effective by allowing you to easily build and remove resources when you do not need them. Using IaC also lets you spin up your green environment whenever you need it. Instead of letting your blue and green environments persist indefinitely or allocating time to build them, you
 deploy your green infrastructure environment when you want to deploy your new software application. Once your green environment is stable, you can tear down your blue environment. 
 
-HashiCorp's Terraform is an infrastructure as code tool that can help you deploy and manage blue/green infrastructure environments. By using Terraform modules, you can consistently deploy identical infrastructure using the same code but in different environments through variables. You can also define feature toggles in your Terraform code to create a blue and green deployment environment simultaneously. You can then test your application in your new green environment, and then, when you are ready, set the toggle in your code to destroy your blue environment. 
+## Using Terraform for blue green deployments
+
+HashiCorp's Terraform is an infrastructure as code tool that can help you deploy and manage blue green infrastructure environments. By using Terraform modules, you can consistently deploy identical infrastructure using the same code but in different environments through variables. You can also define feature toggles in your Terraform code to create a blue and green deployment environment simultaneously. You can then test your application in your new green environment, and then, when you are ready, set the toggle in your code to destroy your blue environment.
 
 HashiCorp resources: