What template feature is used to apply permissions to Lambda functions?

The correct answer is the use of SAM Policy Templates.

AWS Serverless Application Model (SAM) is a framework that simplifies the process of building serverless applications on AWS. Within this framework, SAM Policy Templates allow developers to define permissions for AWS Lambda functions and other resources in a declarative way. By using SAM Policy Templates, you can specify the necessary permissions that your Lambda function requires to interact with other AWS services, such as S3, DynamoDB, or SNS, without having to explicitly write complex IAM policy documents.

For example, when defining an AWS Lambda function in a SAM template, you can attach a SAM Policy Template that grants the function the required permissions to read from an S3 bucket or write to a DynamoDB table. This approach enhances both security and development efficiency by ensuring that the least privilege principle is adhered to, while also simplifying the permissions setup process.

While IAM Role Templates could potentially be relevant, they are not specifically designed for Lambda functions within the context of SAM. Other choices, such as AWS Policy Templates and CodeDeploy Templates, serve different purposes and are not directly used to grant permissions to Lambda functions in the same way that SAM Policy Templates are. Thus, using SAM Policy Templates is the most appropriate method for applying permissions specifically