From f47f7e9c7f663522b3c22edb5a5452044598eac3 Mon Sep 17 00:00:00 2001
From: Gert van den Berg <gert.vandenberg@iotnxt.com>
Date: Fri, 18 Jul 2025 11:54:55 +0200
Subject: [PATCH 1/4] Add support for specifying the region for version 6+ of
 the AWS provider

---
 README.md                          |  5 ++-
 examples/multi-region/README.md    | 67 ++++++++++++++++++++++++++++++
 examples/multi-region/main.tf      | 47 +++++++++++++++++++++
 examples/multi-region/outputs.tf   |  1 +
 examples/multi-region/variables.tf |  0
 examples/multi-region/versions.tf  | 10 +++++
 main.tf                            | 24 +++++++++++
 variables.tf                       |  6 +++
 versions.tf                        |  2 +-
 9 files changed, 159 insertions(+), 3 deletions(-)
 create mode 100644 examples/multi-region/README.md
 create mode 100644 examples/multi-region/main.tf
 create mode 100644 examples/multi-region/outputs.tf
 create mode 100644 examples/multi-region/variables.tf
 create mode 100644 examples/multi-region/versions.tf

diff --git a/README.md b/README.md
index 53900ce..1353395 100644
--- a/README.md
+++ b/README.md
@@ -69,13 +69,13 @@ module "vpc" {
 | Name | Version |
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.1 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.4 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.0 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 4.4 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 6.0 |
 
 ## Modules
 
@@ -119,6 +119,7 @@ No modules.
 | <a name="input_ram_principals"></a> [ram\_principals](#input\_ram\_principals) | A list of principals to share TGW with. Possible values are an AWS account ID, an AWS Organizations Organization ARN, or an AWS Organizations Organization Unit ARN | `list(string)` | `[]` | no |
 | <a name="input_ram_resource_share_arn"></a> [ram\_resource\_share\_arn](#input\_ram\_resource\_share\_arn) | ARN of RAM resource share | `string` | `""` | no |
 | <a name="input_ram_tags"></a> [ram\_tags](#input\_ram\_tags) | Additional tags for the RAM | `map(string)` | `{}` | no |
+| <a name="input_region"></a> [region](#input\_region) | Region where the resource(s) will be managed. Defaults to the region set in the provider configuration | `string` | `null` | no |
 | <a name="input_share_tgw"></a> [share\_tgw](#input\_share\_tgw) | Whether to share your transit gateway with other accounts | `bool` | `true` | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | A map of tags to add to all resources | `map(string)` | `{}` | no |
 | <a name="input_tgw_default_route_table_tags"></a> [tgw\_default\_route\_table\_tags](#input\_tgw\_default\_route\_table\_tags) | Additional tags for the Default TGW route table | `map(string)` | `{}` | no |
diff --git a/examples/multi-region/README.md b/examples/multi-region/README.md
new file mode 100644
index 0000000..dd795ad
--- /dev/null
+++ b/examples/multi-region/README.md
@@ -0,0 +1,67 @@
+# Complete AWS Transit Gateway example
+
+Configuration in this directory creates two AWS Transit Gateways in different regions.
+
+## Usage
+
+To run this example you need to execute:
+
+```bash
+$ terraform init
+$ terraform plan
+$ terraform apply
+```
+
+Note that this example may create resources which cost money. Run `terraform destroy` when you don't need these resources.
+
+<!-- BEGIN_TF_DOCS -->
+## Requirements
+
+| Name | Version |
+|------|---------|
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.4 |
+
+## Providers
+
+No providers.
+
+## Modules
+
+| Name | Source | Version |
+|------|--------|---------|
+| <a name="module_tgw"></a> [tgw](#module\_tgw) | ../../ | n/a |
+| <a name="module_tgw_peer"></a> [tgw\_peer](#module\_tgw\_peer) | ../../ | n/a |
+| <a name="module_vpc1"></a> [vpc1](#module\_vpc1) | terraform-aws-modules/vpc/aws | ~> 5.0 |
+| <a name="module_vpc2"></a> [vpc2](#module\_vpc2) | terraform-aws-modules/vpc/aws | ~> 5.0 |
+
+## Resources
+
+No resources.
+
+## Inputs
+
+No inputs.
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| <a name="output_ec2_transit_gateway_arn"></a> [ec2\_transit\_gateway\_arn](#output\_ec2\_transit\_gateway\_arn) | EC2 Transit Gateway Amazon Resource Name (ARN) |
+| <a name="output_ec2_transit_gateway_association_default_route_table_id"></a> [ec2\_transit\_gateway\_association\_default\_route\_table\_id](#output\_ec2\_transit\_gateway\_association\_default\_route\_table\_id) | Identifier of the default association route table |
+| <a name="output_ec2_transit_gateway_id"></a> [ec2\_transit\_gateway\_id](#output\_ec2\_transit\_gateway\_id) | EC2 Transit Gateway identifier |
+| <a name="output_ec2_transit_gateway_owner_id"></a> [ec2\_transit\_gateway\_owner\_id](#output\_ec2\_transit\_gateway\_owner\_id) | Identifier of the AWS account that owns the EC2 Transit Gateway |
+| <a name="output_ec2_transit_gateway_propagation_default_route_table_id"></a> [ec2\_transit\_gateway\_propagation\_default\_route\_table\_id](#output\_ec2\_transit\_gateway\_propagation\_default\_route\_table\_id) | Identifier of the default propagation route table |
+| <a name="output_ec2_transit_gateway_route_ids"></a> [ec2\_transit\_gateway\_route\_ids](#output\_ec2\_transit\_gateway\_route\_ids) | List of EC2 Transit Gateway Route Table identifier combined with destination |
+| <a name="output_ec2_transit_gateway_route_table_association"></a> [ec2\_transit\_gateway\_route\_table\_association](#output\_ec2\_transit\_gateway\_route\_table\_association) | Map of EC2 Transit Gateway Route Table Association attributes |
+| <a name="output_ec2_transit_gateway_route_table_association_ids"></a> [ec2\_transit\_gateway\_route\_table\_association\_ids](#output\_ec2\_transit\_gateway\_route\_table\_association\_ids) | List of EC2 Transit Gateway Route Table Association identifiers |
+| <a name="output_ec2_transit_gateway_route_table_default_association_route_table"></a> [ec2\_transit\_gateway\_route\_table\_default\_association\_route\_table](#output\_ec2\_transit\_gateway\_route\_table\_default\_association\_route\_table) | Boolean whether this is the default association route table for the EC2 Transit Gateway |
+| <a name="output_ec2_transit_gateway_route_table_default_propagation_route_table"></a> [ec2\_transit\_gateway\_route\_table\_default\_propagation\_route\_table](#output\_ec2\_transit\_gateway\_route\_table\_default\_propagation\_route\_table) | Boolean whether this is the default propagation route table for the EC2 Transit Gateway |
+| <a name="output_ec2_transit_gateway_route_table_id"></a> [ec2\_transit\_gateway\_route\_table\_id](#output\_ec2\_transit\_gateway\_route\_table\_id) | EC2 Transit Gateway Route Table identifier |
+| <a name="output_ec2_transit_gateway_route_table_propagation"></a> [ec2\_transit\_gateway\_route\_table\_propagation](#output\_ec2\_transit\_gateway\_route\_table\_propagation) | Map of EC2 Transit Gateway Route Table Propagation attributes |
+| <a name="output_ec2_transit_gateway_route_table_propagation_ids"></a> [ec2\_transit\_gateway\_route\_table\_propagation\_ids](#output\_ec2\_transit\_gateway\_route\_table\_propagation\_ids) | List of EC2 Transit Gateway Route Table Propagation identifiers |
+| <a name="output_ec2_transit_gateway_vpc_attachment"></a> [ec2\_transit\_gateway\_vpc\_attachment](#output\_ec2\_transit\_gateway\_vpc\_attachment) | Map of EC2 Transit Gateway VPC Attachment attributes |
+| <a name="output_ec2_transit_gateway_vpc_attachment_ids"></a> [ec2\_transit\_gateway\_vpc\_attachment\_ids](#output\_ec2\_transit\_gateway\_vpc\_attachment\_ids) | List of EC2 Transit Gateway VPC Attachment identifiers |
+| <a name="output_ram_principal_association_id"></a> [ram\_principal\_association\_id](#output\_ram\_principal\_association\_id) | The Amazon Resource Name (ARN) of the Resource Share and the principal, separated by a comma |
+| <a name="output_ram_resource_share_id"></a> [ram\_resource\_share\_id](#output\_ram\_resource\_share\_id) | The Amazon Resource Name (ARN) of the resource share |
+<!-- END_TF_DOCS -->
diff --git a/examples/multi-region/main.tf b/examples/multi-region/main.tf
new file mode 100644
index 0000000..c6aa451
--- /dev/null
+++ b/examples/multi-region/main.tf
@@ -0,0 +1,47 @@
+provider "aws" {
+  region = local.region1
+}
+
+locals {
+  name    = "ex-tgw-${replace(basename(path.cwd), "_", "-")}"
+  region1 = "eu-west-1"
+  region2 = "eu-north-1"
+
+  tags = {
+    Example    = local.name
+    GithubRepo = "terraform-aws-eks"
+    GithubOrg  = "terraform-aws-transit-gateway"
+  }
+}
+
+################################################################################
+# Transit Gateway Module
+################################################################################
+
+module "tgw_region1" {
+  source = "../../"
+
+  region = local.region1
+
+  name            = local.name
+  description     = "My TGW in ${local.region1}"
+  amazon_side_asn = 64532
+
+  share_tgw = false
+
+  tags = local.tags
+}
+
+module "tgw_region2" {
+  source = "../../"
+
+  region = local.region2
+
+  name            = "${local.name}-peer"
+  description     = "My TGW in ${local.region2}"
+  amazon_side_asn = 64532
+
+  share_tgw = false
+
+  tags = local.tags
+}
diff --git a/examples/multi-region/outputs.tf b/examples/multi-region/outputs.tf
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/examples/multi-region/outputs.tf
@@ -0,0 +1 @@
+
diff --git a/examples/multi-region/variables.tf b/examples/multi-region/variables.tf
new file mode 100644
index 0000000..e69de29
diff --git a/examples/multi-region/versions.tf b/examples/multi-region/versions.tf
new file mode 100644
index 0000000..46b7087
--- /dev/null
+++ b/examples/multi-region/versions.tf
@@ -0,0 +1,10 @@
+terraform {
+  required_version = ">= 1.0"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = ">= 4.4"
+    }
+  }
+}
diff --git a/main.tf b/main.tf
index 8fbec96..da97814 100644
--- a/main.tf
+++ b/main.tf
@@ -28,6 +28,8 @@ locals {
 resource "aws_ec2_transit_gateway" "this" {
   count = var.create_tgw ? 1 : 0
 
+  region = var.region
+
   description                        = coalesce(var.description, var.name)
   amazon_side_asn                    = var.amazon_side_asn
   default_route_table_association    = var.enable_default_route_table_association ? "enable" : "disable"
@@ -55,6 +57,8 @@ resource "aws_ec2_transit_gateway" "this" {
 resource "aws_ec2_tag" "this" {
   for_each = { for k, v in local.tgw_default_route_table_tags_merged : k => v if var.create_tgw && var.enable_default_route_table_association }
 
+  region = var.region
+
   resource_id = aws_ec2_transit_gateway.this[0].association_default_route_table_id
   key         = each.key
   value       = each.value
@@ -67,6 +71,8 @@ resource "aws_ec2_tag" "this" {
 resource "aws_ec2_transit_gateway_vpc_attachment" "this" {
   for_each = var.vpc_attachments
 
+  region = var.region
+
   transit_gateway_id = var.create_tgw ? aws_ec2_transit_gateway.this[0].id : each.value.tgw_id
   vpc_id             = each.value.vpc_id
   subnet_ids         = each.value.subnet_ids
@@ -95,6 +101,8 @@ resource "aws_ec2_transit_gateway_vpc_attachment" "this" {
 resource "aws_ec2_transit_gateway_route_table" "this" {
   count = var.create_tgw && var.create_tgw_routes ? 1 : 0
 
+  region = var.region
+
   transit_gateway_id = aws_ec2_transit_gateway.this[0].id
 
   tags = merge(
@@ -107,6 +115,8 @@ resource "aws_ec2_transit_gateway_route_table" "this" {
 resource "aws_ec2_transit_gateway_route" "this" {
   count = var.create_tgw_routes ? length(local.vpc_attachments_with_routes) : 0
 
+  region = var.region
+
   destination_cidr_block = local.vpc_attachments_with_routes[count.index][1].destination_cidr_block
   blackhole              = try(local.vpc_attachments_with_routes[count.index][1].blackhole, null)
 
@@ -120,6 +130,8 @@ resource "aws_route" "this" {
     tgw_id = x.tgw_id
   } }
 
+  region = var.region
+
   route_table_id              = each.key
   destination_cidr_block      = try(each.value.ipv6_support, false) ? null : each.value["cidr"]
   destination_ipv6_cidr_block = try(each.value.ipv6_support, false) ? each.value["cidr"] : null
@@ -133,6 +145,8 @@ resource "aws_ec2_transit_gateway_route_table_association" "this" {
     for k, v in var.vpc_attachments : k => v if var.create_tgw && var.create_tgw_routes && try(v.transit_gateway_default_route_table_association, true) != true
   }
 
+  region = var.region
+
   # Create association if it was not set already by aws_ec2_transit_gateway_vpc_attachment resource
   transit_gateway_attachment_id  = aws_ec2_transit_gateway_vpc_attachment.this[each.key].id
   transit_gateway_route_table_id = var.create_tgw ? aws_ec2_transit_gateway_route_table.this[0].id : try(each.value.transit_gateway_route_table_id, var.transit_gateway_route_table_id)
@@ -143,6 +157,8 @@ resource "aws_ec2_transit_gateway_route_table_propagation" "this" {
     for k, v in var.vpc_attachments : k => v if var.create_tgw && var.create_tgw_routes && try(v.transit_gateway_default_route_table_propagation, true) != true
   }
 
+  region = var.region
+
   # Create association if it was not set already by aws_ec2_transit_gateway_vpc_attachment resource
   transit_gateway_attachment_id  = aws_ec2_transit_gateway_vpc_attachment.this[each.key].id
   transit_gateway_route_table_id = var.create_tgw ? aws_ec2_transit_gateway_route_table.this[0].id : try(each.value.transit_gateway_route_table_id, var.transit_gateway_route_table_id)
@@ -155,6 +171,8 @@ resource "aws_ec2_transit_gateway_route_table_propagation" "this" {
 resource "aws_ram_resource_share" "this" {
   count = var.create_tgw && var.share_tgw ? 1 : 0
 
+  region = var.region
+
   name                      = coalesce(var.ram_name, var.name)
   allow_external_principals = var.ram_allow_external_principals
 
@@ -168,6 +186,8 @@ resource "aws_ram_resource_share" "this" {
 resource "aws_ram_resource_association" "this" {
   count = var.create_tgw && var.share_tgw ? 1 : 0
 
+  region = var.region
+
   resource_arn       = aws_ec2_transit_gateway.this[0].arn
   resource_share_arn = aws_ram_resource_share.this[0].id
 }
@@ -175,6 +195,8 @@ resource "aws_ram_resource_association" "this" {
 resource "aws_ram_principal_association" "this" {
   count = var.create_tgw && var.share_tgw ? length(var.ram_principals) : 0
 
+  region = var.region
+
   principal          = var.ram_principals[count.index]
   resource_share_arn = aws_ram_resource_share.this[0].arn
 }
@@ -182,5 +204,7 @@ resource "aws_ram_principal_association" "this" {
 resource "aws_ram_resource_share_accepter" "this" {
   count = !var.create_tgw && var.share_tgw ? 1 : 0
 
+  region = var.region
+
   share_arn = var.ram_resource_share_arn
 }
diff --git a/variables.tf b/variables.tf
index da01c9d..7e2899e 100644
--- a/variables.tf
+++ b/variables.tf
@@ -10,6 +10,12 @@ variable "tags" {
   default     = {}
 }
 
+variable "region" {
+  description = "Region where the resource(s) will be managed. Defaults to the region set in the provider configuration"
+  type        = string
+  default     = null
+}
+
 ################################################################################
 # Transit Gateway
 ################################################################################
diff --git a/versions.tf b/versions.tf
index 03533eb..07eaa21 100644
--- a/versions.tf
+++ b/versions.tf
@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 4.4"
+      version = ">= 6.0"
     }
   }
 }

From 268235be96266945c0330b7bc8f203534599c7bd Mon Sep 17 00:00:00 2001
From: Gert van den Berg <1136567+mohag@users.noreply.github.com>
Date: Thu, 28 Aug 2025 18:48:30 +0200
Subject: [PATCH 2/4] Update examples/multi-region/versions.tf

Co-authored-by: Marc Tamsky <tamsky@users.noreply.github.com>
---
 examples/multi-region/versions.tf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/multi-region/versions.tf b/examples/multi-region/versions.tf
index 46b7087..aaf26b8 100644
--- a/examples/multi-region/versions.tf
+++ b/examples/multi-region/versions.tf
@@ -4,7 +4,7 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 4.4"
+      version = ">= 6.0"
     }
   }
 }

From e4c7507c8312aae57590150b4c84419a40aadab8 Mon Sep 17 00:00:00 2001
From: Gert van den Berg <gert.vandenberg@iotnxt.com>
Date: Fri, 29 Aug 2025 11:22:05 +0200
Subject: [PATCH 3/4] Set minimum version where the region is used to 6.0

---
 examples/multi-region/README.md  | 28 ++++------------------------
 examples/multi-region/outputs.tf |  1 -
 2 files changed, 4 insertions(+), 25 deletions(-)

diff --git a/examples/multi-region/README.md b/examples/multi-region/README.md
index dd795ad..41a2f19 100644
--- a/examples/multi-region/README.md
+++ b/examples/multi-region/README.md
@@ -20,7 +20,7 @@ Note that this example may create resources which cost money. Run `terraform des
 | Name | Version |
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.4 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.0 |
 
 ## Providers
 
@@ -30,10 +30,8 @@ No providers.
 
 | Name | Source | Version |
 |------|--------|---------|
-| <a name="module_tgw"></a> [tgw](#module\_tgw) | ../../ | n/a |
-| <a name="module_tgw_peer"></a> [tgw\_peer](#module\_tgw\_peer) | ../../ | n/a |
-| <a name="module_vpc1"></a> [vpc1](#module\_vpc1) | terraform-aws-modules/vpc/aws | ~> 5.0 |
-| <a name="module_vpc2"></a> [vpc2](#module\_vpc2) | terraform-aws-modules/vpc/aws | ~> 5.0 |
+| <a name="module_tgw_region1"></a> [tgw\_region1](#module\_tgw\_region1) | ../../ | n/a |
+| <a name="module_tgw_region2"></a> [tgw\_region2](#module\_tgw\_region2) | ../../ | n/a |
 
 ## Resources
 
@@ -45,23 +43,5 @@ No inputs.
 
 ## Outputs
 
-| Name | Description |
-|------|-------------|
-| <a name="output_ec2_transit_gateway_arn"></a> [ec2\_transit\_gateway\_arn](#output\_ec2\_transit\_gateway\_arn) | EC2 Transit Gateway Amazon Resource Name (ARN) |
-| <a name="output_ec2_transit_gateway_association_default_route_table_id"></a> [ec2\_transit\_gateway\_association\_default\_route\_table\_id](#output\_ec2\_transit\_gateway\_association\_default\_route\_table\_id) | Identifier of the default association route table |
-| <a name="output_ec2_transit_gateway_id"></a> [ec2\_transit\_gateway\_id](#output\_ec2\_transit\_gateway\_id) | EC2 Transit Gateway identifier |
-| <a name="output_ec2_transit_gateway_owner_id"></a> [ec2\_transit\_gateway\_owner\_id](#output\_ec2\_transit\_gateway\_owner\_id) | Identifier of the AWS account that owns the EC2 Transit Gateway |
-| <a name="output_ec2_transit_gateway_propagation_default_route_table_id"></a> [ec2\_transit\_gateway\_propagation\_default\_route\_table\_id](#output\_ec2\_transit\_gateway\_propagation\_default\_route\_table\_id) | Identifier of the default propagation route table |
-| <a name="output_ec2_transit_gateway_route_ids"></a> [ec2\_transit\_gateway\_route\_ids](#output\_ec2\_transit\_gateway\_route\_ids) | List of EC2 Transit Gateway Route Table identifier combined with destination |
-| <a name="output_ec2_transit_gateway_route_table_association"></a> [ec2\_transit\_gateway\_route\_table\_association](#output\_ec2\_transit\_gateway\_route\_table\_association) | Map of EC2 Transit Gateway Route Table Association attributes |
-| <a name="output_ec2_transit_gateway_route_table_association_ids"></a> [ec2\_transit\_gateway\_route\_table\_association\_ids](#output\_ec2\_transit\_gateway\_route\_table\_association\_ids) | List of EC2 Transit Gateway Route Table Association identifiers |
-| <a name="output_ec2_transit_gateway_route_table_default_association_route_table"></a> [ec2\_transit\_gateway\_route\_table\_default\_association\_route\_table](#output\_ec2\_transit\_gateway\_route\_table\_default\_association\_route\_table) | Boolean whether this is the default association route table for the EC2 Transit Gateway |
-| <a name="output_ec2_transit_gateway_route_table_default_propagation_route_table"></a> [ec2\_transit\_gateway\_route\_table\_default\_propagation\_route\_table](#output\_ec2\_transit\_gateway\_route\_table\_default\_propagation\_route\_table) | Boolean whether this is the default propagation route table for the EC2 Transit Gateway |
-| <a name="output_ec2_transit_gateway_route_table_id"></a> [ec2\_transit\_gateway\_route\_table\_id](#output\_ec2\_transit\_gateway\_route\_table\_id) | EC2 Transit Gateway Route Table identifier |
-| <a name="output_ec2_transit_gateway_route_table_propagation"></a> [ec2\_transit\_gateway\_route\_table\_propagation](#output\_ec2\_transit\_gateway\_route\_table\_propagation) | Map of EC2 Transit Gateway Route Table Propagation attributes |
-| <a name="output_ec2_transit_gateway_route_table_propagation_ids"></a> [ec2\_transit\_gateway\_route\_table\_propagation\_ids](#output\_ec2\_transit\_gateway\_route\_table\_propagation\_ids) | List of EC2 Transit Gateway Route Table Propagation identifiers |
-| <a name="output_ec2_transit_gateway_vpc_attachment"></a> [ec2\_transit\_gateway\_vpc\_attachment](#output\_ec2\_transit\_gateway\_vpc\_attachment) | Map of EC2 Transit Gateway VPC Attachment attributes |
-| <a name="output_ec2_transit_gateway_vpc_attachment_ids"></a> [ec2\_transit\_gateway\_vpc\_attachment\_ids](#output\_ec2\_transit\_gateway\_vpc\_attachment\_ids) | List of EC2 Transit Gateway VPC Attachment identifiers |
-| <a name="output_ram_principal_association_id"></a> [ram\_principal\_association\_id](#output\_ram\_principal\_association\_id) | The Amazon Resource Name (ARN) of the Resource Share and the principal, separated by a comma |
-| <a name="output_ram_resource_share_id"></a> [ram\_resource\_share\_id](#output\_ram\_resource\_share\_id) | The Amazon Resource Name (ARN) of the resource share |
+No outputs.
 <!-- END_TF_DOCS -->
diff --git a/examples/multi-region/outputs.tf b/examples/multi-region/outputs.tf
index 8b13789..e69de29 100644
--- a/examples/multi-region/outputs.tf
+++ b/examples/multi-region/outputs.tf
@@ -1 +0,0 @@
-

From c2e91697a66fc72578336b2f411b308a1237b310 Mon Sep 17 00:00:00 2001
From: Bryant Biggs <bryantbiggs@gmail.com>
Date: Thu, 25 Sep 2025 16:04:02 -0500
Subject: [PATCH 4/4] feat!: Raise MSV of Terraform to `v1.5.7`

---
 .pre-commit-config.yaml            |  4 +--
 README.md                          | 32 +++++---------------
 examples/README.md                 |  5 ++++
 examples/complete/README.md        | 16 ++++++----
 examples/complete/main.tf          | 32 +++++++++++---------
 examples/complete/versions.tf      |  4 +--
 examples/multi-account/README.md   | 16 ++++++----
 examples/multi-account/main.tf     | 37 +++++++++++------------
 examples/multi-account/versions.tf |  4 +--
 examples/multi-region/README.md    | 47 ------------------------------
 examples/multi-region/main.tf      | 47 ------------------------------
 examples/multi-region/outputs.tf   |  0
 examples/multi-region/variables.tf |  0
 examples/multi-region/versions.tf  | 10 -------
 main.tf                            | 19 ++++++++----
 variables.tf                       |  8 +++--
 versions.tf                        |  2 +-
 17 files changed, 97 insertions(+), 186 deletions(-)
 create mode 100644 examples/README.md
 delete mode 100644 examples/multi-region/README.md
 delete mode 100644 examples/multi-region/main.tf
 delete mode 100644 examples/multi-region/outputs.tf
 delete mode 100644 examples/multi-region/variables.tf
 delete mode 100644 examples/multi-region/versions.tf

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a6cd369..11084f7 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/antonbabenko/pre-commit-terraform
-    rev: v1.96.1
+    rev: v1.100.0
     hooks:
       - id: terraform_fmt
       - id: terraform_docs
@@ -23,7 +23,7 @@ repos:
           - '--args=--only=terraform_workspace_remote'
       - id: terraform_validate
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: check-merge-conflict
       - id: end-of-file-fixer
diff --git a/README.md b/README.md
index 1353395..0d4abd9 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,6 @@ Terraform module which creates Transit Gateway resources on AWS.
 ```hcl
 module "tgw" {
   source  = "terraform-aws-modules/transit-gateway/aws"
-  version = "~> 2.0"
 
   name        = "my-tgw"
   description = "My TGW shared with several other AWS accounts"
@@ -16,8 +15,8 @@ module "tgw" {
 
   vpc_attachments = {
     vpc = {
-      vpc_id       = module.vpc.vpc_id
-      subnet_ids   = module.vpc.private_subnets
+      vpc_id       = "vpc-1234556abcdef"
+      subnet_ids   = ["subnet-abcde012", "subnet-bcde012a", "subnet-fghi345a"]
       dns_support  = true
       ipv6_support = true
 
@@ -26,7 +25,7 @@ module "tgw" {
           destination_cidr_block = "30.0.0.0/16"
         },
         {
-          blackhole = true
+          blackhole              = true
           destination_cidr_block = "40.0.0.0/20"
         }
       ]
@@ -34,28 +33,13 @@ module "tgw" {
   }
 
   ram_allow_external_principals = true
-  ram_principals = [307990089504]
+  ram_principals                = [307990089504]
 
   tags = {
-    Purpose = "tgw-complete-example"
+    Terraform   = "true"
+    Environment = "dev"
   }
 }
-
-module "vpc" {
-  source  = "terraform-aws-modules/vpc/aws"
-  version = "~> 3.0"
-
-  name = "my-vpc"
-
-  cidr = "10.10.0.0/16"
-
-  azs             = ["eu-west-1a", "eu-west-1b", "eu-west-1c"]
-  private_subnets = ["10.10.1.0/24", "10.10.2.0/24", "10.10.3.0/24"]
-
-  enable_ipv6                                    = true
-  private_subnet_assign_ipv6_address_on_creation = true
-  private_subnet_ipv6_prefixes                   = [0, 1, 2]
-}
 ```
 
 ## Examples
@@ -68,7 +52,7 @@ module "vpc" {
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.1 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.5.7 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.0 |
 
 ## Providers
@@ -126,7 +110,7 @@ No modules.
 | <a name="input_tgw_route_table_tags"></a> [tgw\_route\_table\_tags](#input\_tgw\_route\_table\_tags) | Additional tags for the TGW route table | `map(string)` | `{}` | no |
 | <a name="input_tgw_tags"></a> [tgw\_tags](#input\_tgw\_tags) | Additional tags for the TGW | `map(string)` | `{}` | no |
 | <a name="input_tgw_vpc_attachment_tags"></a> [tgw\_vpc\_attachment\_tags](#input\_tgw\_vpc\_attachment\_tags) | Additional tags for VPC attachments | `map(string)` | `{}` | no |
-| <a name="input_timeouts"></a> [timeouts](#input\_timeouts) | Create, update, and delete timeout configurations for the transit gateway | `map(string)` | `{}` | no |
+| <a name="input_timeouts"></a> [timeouts](#input\_timeouts) | Create, update, and delete timeout configurations for the transit gateway | <pre>object({<br/>    create = optional(bool)<br/>    update = optional(bool)<br/>    delete = optional(bool)<br/>  })</pre> | `null` | no |
 | <a name="input_transit_gateway_cidr_blocks"></a> [transit\_gateway\_cidr\_blocks](#input\_transit\_gateway\_cidr\_blocks) | One or more IPv4 or IPv6 CIDR blocks for the transit gateway. Must be a size /24 CIDR block or larger for IPv4, or a size /64 CIDR block or larger for IPv6 | `list(string)` | `[]` | no |
 | <a name="input_transit_gateway_route_table_id"></a> [transit\_gateway\_route\_table\_id](#input\_transit\_gateway\_route\_table\_id) | Identifier of EC2 Transit Gateway Route Table to use with the Target Gateway when reusing it between multiple TGWs | `string` | `null` | no |
 | <a name="input_vpc_attachments"></a> [vpc\_attachments](#input\_vpc\_attachments) | Maps of maps of VPC details to attach to TGW. Type 'any' to disable type validation by Terraform. | `any` | `{}` | no |
diff --git a/examples/README.md b/examples/README.md
new file mode 100644
index 0000000..8d54b3d
--- /dev/null
+++ b/examples/README.md
@@ -0,0 +1,5 @@
+# Examples
+
+The examples provided demonstrate different cluster configurations that users can create with the modules provided.
+
+Please do not mistake the examples provided as "best practices". It is up to users to consult the AWS service documentation for best practices, usage recommendations, etc.
diff --git a/examples/complete/README.md b/examples/complete/README.md
index b4ef9c3..d56669e 100644
--- a/examples/complete/README.md
+++ b/examples/complete/README.md
@@ -19,24 +19,28 @@ Note that this example may create resources which cost money. Run `terraform des
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.4 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.5.7 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.0 |
 
 ## Providers
 
-No providers.
+| Name | Version |
+|------|---------|
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 6.0 |
 
 ## Modules
 
 | Name | Source | Version |
 |------|--------|---------|
 | <a name="module_tgw"></a> [tgw](#module\_tgw) | ../../ | n/a |
-| <a name="module_vpc1"></a> [vpc1](#module\_vpc1) | terraform-aws-modules/vpc/aws | ~> 5.0 |
-| <a name="module_vpc2"></a> [vpc2](#module\_vpc2) | terraform-aws-modules/vpc/aws | ~> 5.0 |
+| <a name="module_vpc1"></a> [vpc1](#module\_vpc1) | terraform-aws-modules/vpc/aws | ~> 6.0 |
+| <a name="module_vpc2"></a> [vpc2](#module\_vpc2) | terraform-aws-modules/vpc/aws | ~> 6.0 |
 
 ## Resources
 
-No resources.
+| Name | Type |
+|------|------|
+| [aws_availability_zones.available](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/availability_zones) | data source |
 
 ## Inputs
 
diff --git a/examples/complete/main.tf b/examples/complete/main.tf
index 1f372a8..fcf5126 100644
--- a/examples/complete/main.tf
+++ b/examples/complete/main.tf
@@ -2,14 +2,20 @@ provider "aws" {
   region = local.region
 }
 
+data "aws_availability_zones" "available" {}
+
 locals {
-  name   = "ex-tgw-${replace(basename(path.cwd), "_", "-")}"
   region = "eu-west-1"
+  name   = "ex-${basename(path.cwd)}"
+
+  vpc1_cidr = "10.10.0.0/16"
+  vpc2_cidr = "10.20.0.0/16"
+  azs       = slice(data.aws_availability_zones.available.names, 0, 3)
 
   tags = {
+    Name       = local.name
     Example    = local.name
-    GithubRepo = "terraform-aws-eks"
-    GithubOrg  = "terraform-aws-transit-gateway"
+    Repository = "https://github.com/terraform-aws-modules/terraform-aws-transit-gateway"
   }
 }
 
@@ -87,13 +93,13 @@ module "tgw" {
 
 module "vpc1" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "~> 5.0"
+  version = "~> 6.0"
 
-  name = "${local.name}-vpc1"
-  cidr = "10.10.0.0/16"
+  name = "${local.name}-1"
+  cidr = local.vpc1_cidr
 
-  azs             = ["${local.region}a", "${local.region}b", "${local.region}c"]
-  private_subnets = ["10.10.1.0/24", "10.10.2.0/24", "10.10.3.0/24"]
+  azs             = local.azs
+  private_subnets = [for k, v in local.azs : cidrsubnet(local.vpc1_cidr, 8, k)]
 
   enable_ipv6                                    = true
   private_subnet_assign_ipv6_address_on_creation = true
@@ -104,13 +110,13 @@ module "vpc1" {
 
 module "vpc2" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "~> 5.0"
+  version = "~> 6.0"
 
-  name = "${local.name}-vpc2"
-  cidr = "10.20.0.0/16"
+  name = "${local.name}-2"
+  cidr = local.vpc2_cidr
 
-  azs             = ["${local.region}a", "${local.region}b", "${local.region}c"]
-  private_subnets = ["10.20.1.0/24", "10.20.2.0/24", "10.20.3.0/24"]
+  azs             = local.azs
+  private_subnets = [for k, v in local.azs : cidrsubnet(local.vpc2_cidr, 8, k)]
 
   enable_ipv6 = false
 
diff --git a/examples/complete/versions.tf b/examples/complete/versions.tf
index 46b7087..db13b0a 100644
--- a/examples/complete/versions.tf
+++ b/examples/complete/versions.tf
@@ -1,10 +1,10 @@
 terraform {
-  required_version = ">= 1.0"
+  required_version = ">= 1.5.7"
 
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 4.4"
+      version = ">= 6.0"
     }
   }
 }
diff --git a/examples/multi-account/README.md b/examples/multi-account/README.md
index d3726ee..c2e1417 100644
--- a/examples/multi-account/README.md
+++ b/examples/multi-account/README.md
@@ -19,12 +19,14 @@ Note that this example may create resources which cost money. Run `terraform des
 
 | Name | Version |
 |------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.4 |
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.5.7 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.0 |
 
 ## Providers
 
-No providers.
+| Name | Version |
+|------|---------|
+| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 6.0 |
 
 ## Modules
 
@@ -32,12 +34,14 @@ No providers.
 |------|--------|---------|
 | <a name="module_tgw"></a> [tgw](#module\_tgw) | ../../ | n/a |
 | <a name="module_tgw_peer"></a> [tgw\_peer](#module\_tgw\_peer) | ../../ | n/a |
-| <a name="module_vpc1"></a> [vpc1](#module\_vpc1) | terraform-aws-modules/vpc/aws | ~> 5.0 |
-| <a name="module_vpc2"></a> [vpc2](#module\_vpc2) | terraform-aws-modules/vpc/aws | ~> 5.0 |
+| <a name="module_vpc1"></a> [vpc1](#module\_vpc1) | terraform-aws-modules/vpc/aws | ~> 6.0 |
+| <a name="module_vpc2"></a> [vpc2](#module\_vpc2) | terraform-aws-modules/vpc/aws | ~> 6.0 |
 
 ## Resources
 
-No resources.
+| Name | Type |
+|------|------|
+| [aws_availability_zones.available](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/availability_zones) | data source |
 
 ## Inputs
 
diff --git a/examples/multi-account/main.tf b/examples/multi-account/main.tf
index 56e0b70..4e2af65 100644
--- a/examples/multi-account/main.tf
+++ b/examples/multi-account/main.tf
@@ -8,14 +8,20 @@ provider "aws" {
   alias  = "peer"
 }
 
+data "aws_availability_zones" "available" {}
+
 locals {
-  name   = "ex-tgw-${replace(basename(path.cwd), "_", "-")}"
   region = "eu-west-1"
+  name   = "ex-${basename(path.cwd)}"
+
+  vpc1_cidr = "10.10.0.0/16"
+  vpc2_cidr = "10.20.0.0/16"
+  azs       = slice(data.aws_availability_zones.available.names, 0, 3)
 
   tags = {
+    Name       = local.name
     Example    = local.name
-    GithubRepo = "terraform-aws-eks"
-    GithubOrg  = "terraform-aws-transit-gateway"
+    Repository = "https://github.com/terraform-aws-modules/terraform-aws-transit-gateway"
   }
 }
 
@@ -131,13 +137,13 @@ module "tgw_peer" {
 
 module "vpc1" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "~> 5.0"
+  version = "~> 6.0"
 
-  name = "${local.name}-vpc1"
-  cidr = "10.10.0.0/16"
+  name = "${local.name}-1"
+  cidr = local.vpc1_cidr
 
-  azs             = ["${local.region}a", "${local.region}b", "${local.region}c"]
-  private_subnets = ["10.10.1.0/24", "10.10.2.0/24", "10.10.3.0/24"]
+  azs             = local.azs
+  private_subnets = [for k, v in local.azs : cidrsubnet(local.vpc1_cidr, 8, k)]
 
   enable_ipv6                                    = true
   private_subnet_assign_ipv6_address_on_creation = true
@@ -146,20 +152,15 @@ module "vpc1" {
   tags = local.tags
 }
 
-
 module "vpc2" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "~> 5.0"
-
-  providers = {
-    aws = aws.peer
-  }
+  version = "~> 6.0"
 
-  name = "${local.name}-vpc2"
-  cidr = "10.20.0.0/16"
+  name = "${local.name}-2"
+  cidr = local.vpc2_cidr
 
-  azs             = ["${local.region}a", "${local.region}b", "${local.region}c"]
-  private_subnets = ["10.20.1.0/24", "10.20.2.0/24", "10.20.3.0/24"]
+  azs             = local.azs
+  private_subnets = [for k, v in local.azs : cidrsubnet(local.vpc2_cidr, 8, k)]
 
   enable_ipv6 = false
 
diff --git a/examples/multi-account/versions.tf b/examples/multi-account/versions.tf
index 46b7087..db13b0a 100644
--- a/examples/multi-account/versions.tf
+++ b/examples/multi-account/versions.tf
@@ -1,10 +1,10 @@
 terraform {
-  required_version = ">= 1.0"
+  required_version = ">= 1.5.7"
 
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = ">= 4.4"
+      version = ">= 6.0"
     }
   }
 }
diff --git a/examples/multi-region/README.md b/examples/multi-region/README.md
deleted file mode 100644
index 41a2f19..0000000
--- a/examples/multi-region/README.md
+++ /dev/null
@@ -1,47 +0,0 @@
-# Complete AWS Transit Gateway example
-
-Configuration in this directory creates two AWS Transit Gateways in different regions.
-
-## Usage
-
-To run this example you need to execute:
-
-```bash
-$ terraform init
-$ terraform plan
-$ terraform apply
-```
-
-Note that this example may create resources which cost money. Run `terraform destroy` when you don't need these resources.
-
-<!-- BEGIN_TF_DOCS -->
-## Requirements
-
-| Name | Version |
-|------|---------|
-| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0 |
-| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.0 |
-
-## Providers
-
-No providers.
-
-## Modules
-
-| Name | Source | Version |
-|------|--------|---------|
-| <a name="module_tgw_region1"></a> [tgw\_region1](#module\_tgw\_region1) | ../../ | n/a |
-| <a name="module_tgw_region2"></a> [tgw\_region2](#module\_tgw\_region2) | ../../ | n/a |
-
-## Resources
-
-No resources.
-
-## Inputs
-
-No inputs.
-
-## Outputs
-
-No outputs.
-<!-- END_TF_DOCS -->
diff --git a/examples/multi-region/main.tf b/examples/multi-region/main.tf
deleted file mode 100644
index c6aa451..0000000
--- a/examples/multi-region/main.tf
+++ /dev/null
@@ -1,47 +0,0 @@
-provider "aws" {
-  region = local.region1
-}
-
-locals {
-  name    = "ex-tgw-${replace(basename(path.cwd), "_", "-")}"
-  region1 = "eu-west-1"
-  region2 = "eu-north-1"
-
-  tags = {
-    Example    = local.name
-    GithubRepo = "terraform-aws-eks"
-    GithubOrg  = "terraform-aws-transit-gateway"
-  }
-}
-
-################################################################################
-# Transit Gateway Module
-################################################################################
-
-module "tgw_region1" {
-  source = "../../"
-
-  region = local.region1
-
-  name            = local.name
-  description     = "My TGW in ${local.region1}"
-  amazon_side_asn = 64532
-
-  share_tgw = false
-
-  tags = local.tags
-}
-
-module "tgw_region2" {
-  source = "../../"
-
-  region = local.region2
-
-  name            = "${local.name}-peer"
-  description     = "My TGW in ${local.region2}"
-  amazon_side_asn = 64532
-
-  share_tgw = false
-
-  tags = local.tags
-}
diff --git a/examples/multi-region/outputs.tf b/examples/multi-region/outputs.tf
deleted file mode 100644
index e69de29..0000000
diff --git a/examples/multi-region/variables.tf b/examples/multi-region/variables.tf
deleted file mode 100644
index e69de29..0000000
diff --git a/examples/multi-region/versions.tf b/examples/multi-region/versions.tf
deleted file mode 100644
index aaf26b8..0000000
--- a/examples/multi-region/versions.tf
+++ /dev/null
@@ -1,10 +0,0 @@
-terraform {
-  required_version = ">= 1.0"
-
-  required_providers {
-    aws = {
-      source  = "hashicorp/aws"
-      version = ">= 6.0"
-    }
-  }
-}
diff --git a/main.tf b/main.tf
index da97814..8925638 100644
--- a/main.tf
+++ b/main.tf
@@ -41,10 +41,13 @@ resource "aws_ec2_transit_gateway" "this" {
   transit_gateway_cidr_blocks        = var.transit_gateway_cidr_blocks
   security_group_referencing_support = var.enable_sg_referencing_support ? "enable" : "disable"
 
-  timeouts {
-    create = try(var.timeouts.create, null)
-    update = try(var.timeouts.update, null)
-    delete = try(var.timeouts.delete, null)
+  dynamic "timeouts" {
+    for_each = var.timeouts == null ? [] : [var.timeouts]
+    content {
+      create = timeouts.value.create
+      update = timeouts.value.update
+      delete = timeouts.value.delete
+    }
   }
 
   tags = merge(
@@ -168,17 +171,21 @@ resource "aws_ec2_transit_gateway_route_table_propagation" "this" {
 # Resource Access Manager
 ################################################################################
 
+locals {
+  ram_name = coalesce(var.ram_name, var.name)
+}
+
 resource "aws_ram_resource_share" "this" {
   count = var.create_tgw && var.share_tgw ? 1 : 0
 
   region = var.region
 
-  name                      = coalesce(var.ram_name, var.name)
+  name                      = local.ram_name
   allow_external_principals = var.ram_allow_external_principals
 
   tags = merge(
     var.tags,
-    { Name = coalesce(var.ram_name, var.name) },
+    { Name = local.ram_name },
     var.ram_tags,
   )
 }
diff --git a/variables.tf b/variables.tf
index 7e2899e..83e29c8 100644
--- a/variables.tf
+++ b/variables.tf
@@ -82,8 +82,12 @@ variable "transit_gateway_cidr_blocks" {
 
 variable "timeouts" {
   description = "Create, update, and delete timeout configurations for the transit gateway"
-  type        = map(string)
-  default     = {}
+  type = object({
+    create = optional(bool)
+    update = optional(bool)
+    delete = optional(bool)
+  })
+  default = null
 }
 
 variable "tgw_tags" {
diff --git a/versions.tf b/versions.tf
index 07eaa21..db13b0a 100644
--- a/versions.tf
+++ b/versions.tf
@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 0.13.1"
+  required_version = ">= 1.5.7"
 
   required_providers {
     aws = {