The Terraform AWS provider has introduced support for Code Signing, a trust and integrity control feature that allows users to verify the source and integrity of AWS Lambda functions. This feature leverages AWS Signer, a new fully managed code signing service, enabling administrators to create digitally signed code artifacts and verify their signatures at deployment. With Code Signing, developers can ensure that only unaltered code is published by approved developers within their Lambda functions, reducing the risk of tampering or alteration during deployment. The feature also allows for separation of responsibilities between operators and developers, promoting a more secure and agile development process.