Does CBH Support IAM Fine-Grained Management?

Yes.

Identity and Access Management (IAM) is a basic service for permission management. By default, new IAM users do not have any permissions. You need to grant different permissions to IAM users based on their duties. IAM fine-grained permission management has been enabled for the CBH service. With IAM permission management, you can perform fine-grained authorization for key operations, such as purchasing, upgrading, and changing specification of CBH instances.

You can configure user login restrictions and access control policies based on user duties in the CBH system to manage user access and O&M operations in a fine-grained manner. However, this function is a permission management function of the CBH system, not offered by the IAM service.