The second part of a series on securely managing AWS credentials in CI/CD systems explores the risks and best practices associated with providing AWS credentials to third-party services and introduces a Pulumi program to automate the rotation of access keys. The article emphasizes caution when sharing AWS credentials due to the potential for exposure, even in secure CI/CD environments, and critiques using secrets managers as they might not enhance security but add complexity. Instead, it advocates for automating the rotation and revocation of AWS credentials to mitigate risks, using a Pulumi-based serverless application, the AWS Credential Rotator 9000, which periodically creates new access keys and updates dependent systems like Travis CI. This approach ensures that credentials remain volatile and reduces the impact of accidental disclosure, while also setting the stage for the next post in the series, which will discuss using IAM Roles for temporary access to additional resources in AWS environments.