AWS CloudFormation vs Test Kitchen

AWS CloudFormation models, provisions, and manages related AWS and third-party resources as infrastructure as code. YAML or JSON templates define AWS resources and their properties. StackSets deploy a common set of resources across multiple AWS accounts and Regions; Change Sets preview proposed stack updates, including possible deletion or replacement, and Drift Detection tracks changes made outside the service. For authoring, AWS CDK supports TypeScript, Python, Java, and .NET, while AWS SAM offers shorthand YAML for serverless resources that is converted during deployment. The CloudFormation Registry supports third-party resources and modules, and stacks can be updated from remote Git repositories. The service is available through API, Linux, macOS, web, and Windows, and manages state. CloudFormation itself has a free plan, with no additional charge for AWS and Alexa resource providers, but created AWS resources are billed at their standard rates. Third-party provider and custom hook operations may also incur charges. Access can be managed with IAM, and CloudTrail logs API calls.

Test Kitchen is a free test harness for running infrastructure code in isolation on one or more platforms. Its workflow uses create, converge, setup, verify, and destroy commands to provision environments and test infrastructure code. Documented drivers cover Amazon EC2, Apache CloudStack, DigitalOcean, Docker through Dokken, Google Cloud Platform, Hetzner Cloud, Vagrant, Azure, Hyper-V, OpenStack, and VMware products. Which drivers are available depends on the driver gems installed in the Ruby environment. Provisioning options include Chef Infra, Cinc Client, Habitat, PowerShell DSC, and shell scripts; listed verification integrations include Cinc Auditor, Chef InSpec, and Serverspec. Community plugins add Ansible, Puppet, and Salt provisioners. Installation is available through RubyGems, system packages, or Cinc Workstation, but Test Kitchen itself does not bundle Cinc or Chef tooling. Requirements include a 64-bit operating system and enabled CPU virtualization. The project uses Apache License 2.0 and points users to Chef Community Slack for community assistance. The documentation notes known issues and no current maintainer for kitchen-docker, recommending kitchen-dokken instead.