What is the primary benefit of using IAM Groups?

Using IAM Groups primarily benefits the streamlining of permission management within AWS. By grouping users with similar access needs or roles into a single entity, organizations can assign permissions to the entire group rather than managing permissions individually for each user. This approach simplifies the process of applying consistent access controls and reduces the potential for errors that may occur when permissions are assigned on an individual basis.

When a new user is added to an IAM Group, they automatically inherit the permissions assigned to that group, which facilitates ease of management, particularly in environments with many users. As the organization grows and evolves, permissions can be adjusted at the group level, ensuring all members receive the necessary access rights without the overhead of modifying each user’s permissions individually.

The other options, while relevant to user management in AWS, do not capture the primary advantage of IAM Groups. Sharing resources pertains more to resource access than to permission management, restricting access focuses on limitations rather than efficient organization of permissions, and logging user activity is a functionality associated with IAM in general but not specifically with the concept of groups.