audytx vs AWS CloudFormation

audytx analyzes AWS infrastructure code and Terraform pull requests, presenting security and cost findings in GitHub and to coding agents. Its deterministic, non-AI engine models resource relationships such as invocation topology, encryption chains, network exposure, resource lifetimes, and IAM trust graphs. The maker lists 303 AWS Terraform checks and 27 cross-resource reasoning axes. A GitHub App posts pull-request digests, inline review, and SARIF, using read-only contents permission while writing comments, reviews, statuses, and SARIF uploads. An optional GitHub Actions step uploads a resolved Terraform plan over OIDC without shared secrets. A hosted MCP server exposes the engine to Claude Code, Cursor, and Codex; autofix applies line-anchored changes and rescans for up to three passes. AWS, Terraform, and CloudFormation are supported in stated hosted workflows. Free includes 100 scans monthly; Plus costs $20 a month and Pro $100 a month.

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.