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AWS Serverless: Build a Custom IAM Policy for Lambda CI/CD with SAM and GitHub – Part 2

  • The article discusses the importance of implementing a custom IAM policy for a Lambda CI/CD pipeline using AWS SAM and GitHub.
  • It emphasizes the need to move away from granting broad permissions and focus on the principle of least privilege.
  • Using a custom IAM policy aligns with AWS security best practices and helps reduce security risks.
  • Advantages of custom policies include limiting the impact of compromised credentials and increasing operational efficiency.
  • Custom policies offer awareness of automation permissions, prevent unintended resource operations, and support compliance requirements.
  • The article provides an example of a custom IAM policy tailored for a Lambda and API Gateway deployment pipeline.
  • It details the steps to attach the custom policy to the role for the code build/code pipeline.
  • The article guides through the process of pushing code changes to trigger the AWS Code Pipeline and reviewing deployment stages.
  • It includes validation steps for invoking the deployed function and API using tools like Postman.
  • Additionally, the article covers reviewing S3 bucket artifacts, CloudWatch logs, and emphasizes resource cleanup post-experimentation.

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