Which of the following is NOT a function of AWS Lambda resource policies?

AWS Lambda resource policies focus on the security and access control of Lambda functions, which includes granting the necessary permissions and access rights for various services, users, or applications to interact with those functions. Granting permissions to services enables Lambda functions to be invoked by other AWS services or third-party applications, while enabling cross-account resource access allows different AWS accounts to invoke functions securely.

Allowing external applications to invoke functions is a crucial aspect of Lambda resource policies, as it determines which external sources can trigger the functions, ensuring that only authorized entities can invoke them.

However, managing function execution times is not a function of AWS Lambda resource policies. Execution times are governed by the configuration settings of the Lambda function itself, where developers can specify timeouts and resource allocation. This aspect focuses more on the operational parameters of executing the function rather than access control, which is central to the purpose of resource policies. Therefore, managing function execution times does not fall under the scope of AWS Lambda resource policies.