The AWS CloudFormation Linter (cfn-lint) v1 introduces enhancements that leverage CloudFormation registry resource provider schemas and JSON schema validation, improving accuracy and compatibility while simplifying rules, enabling cross-region resource type validation, and optimizing resource utilization.

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<p>This article introduces the new version 1 of the AWS CloudFormation Linter (cfn-lint), a tool that checks CloudFormation templates for potential errors and best practices.</p>
<p>Specifically, the article covers:</p>
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<li>Key features of cfn-lint v1, including the migration to CloudFormation registry resource provider schemas, rule simplification, and improved region support</li>
<li>Transition guidelines for reviewing templates, handling cfn-lint configurations, adapting extensions, upgrading to v1, staying updated, and managing dependencies</li>
<li>Continued support for cfn-lint v0 until early 2025 and plans for future releases</li>
<li>The author's role as the creator and maintainer of cfn-lint</li>
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AWS CloudFormation Linter (cfn-lint) v1

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