Which solution will meet these requirements with the LEAST operational overhead?
Create an AWS CloudFormation template that contains a transit gateway attachment and related routing configurations. Create a CloudFormation stack set that includes this template. Use CloudFormation StackSets to deploy a new stack for each VPC in the account. Deploy a new VPC for each test environment.
Create a single VPC for the test environments. Include a transit gateway attachment and related routing configurations. Use AWS CloudFormation to deploy all test environments into the VPC.
Create a new OU in AWS Organizations for testing. Create an AWS CioudFormation template that contains a VPC, necessary networking resources, a transit gateway attachment, and related routing configurations. Create a CloudFormation stack set that includes this template. Use CloudFormation StackSets for deployments into each account under the testing OU. Create a new account for each test environment.
Convert the test environment EC2 instances into Docker images. Use AWS CloudFormation to configure an Amazon Elastic Kubernetes Service (Amazon EKS) cluster in a new VPC, create a transit gateway attachment, and create related routing configurations. Use Kubernetes to manage the deployment and lifecycle of the test environments.
Explanations:
This option involves creating a CloudFormation stack set for multiple VPCs, which adds complexity and operational overhead. Each test environment would require its own VPC, making it less efficient for short-lived instances.
This option proposes a single VPC for all test environments, simplifying management and reducing overhead. The transit gateway attachment can facilitate communication with the on-premises server, and using CloudFormation to deploy environments in a single VPC streamlines the process.
Creating a new account for each test environment increases complexity and operational overhead, as account management would require additional processes and resources. This is unnecessary for short-lived test environments.
While containerization and using EKS could streamline deployments, it introduces significant complexity compared to a simpler EC2 instance-based approach. Setting up an EKS cluster and managing Kubernetes adds overhead that is not justified for short-lived test environments.
I guess:
Create a single VPC for the test environments. Include a transit gateway attachment and related routing configurations. Use AWS CloudFormation to deploy all test environments into the VPC.