What AWS policy action is defined to grant permission for accessing parameters?

The action that grants permission for accessing parameters in AWS is specifically designed to retrieve the values of parameters stored in AWS Systems Manager Parameter Store. When you use the ssm:GetParameters action, it allows users to get the values of one or more parameters in a single request.

This action is essential for applications and services that need to access configuration settings, secret values, or other important parameters securely. Organizations often use the Parameter Store for managing configurations and sensitive information without the need to hard-code these values within application code.

The other options represent different actions that may be related to parameters, but they serve distinct purposes. For example, ssm:PutParameter is used to create or update parameters, ssm:DeleteParameter is intended for removing parameters, and ssm:DescribeParameters is useful for listing parameters and their metadata but does not grant permission to retrieve their values. Thus, ssm:GetParameters is specifically the action focused on accessing and retrieving parameter values.