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AWS Lambda functions now support full IAM resource-based policies

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AWS Lambda functions now support full IAM resource-based policies, enabling platform admins and security teams to define granular access permissions using complete AWS IAM capabilities.

  • Define permissions for multiple principals and actions in a single policy document
  • Leverage full range of IAM condition keys for advanced access control
  • Restrict access based on source IP, principal tags, and other conditions
  • Allow multiple services to invoke functions with a single policy statement
  • Update policies via AWS Lambda console, CLI, SDK, CloudFormation, or AWS SAM
  • Available in all AWS commercial regions at no additional charge

This enhancement streamlines permission management for teams operating multi-account architectures and managing multiple resources at scale.

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