IAM

For IAM, OpenStack uses the Keystone project. Keystone provides the identity, token, catalog, and policy services, which are used specifically by OpenStack services. It is organized as a group of internal services exposed on one or many endpoints. For example, an authentication call validates the user and project credentials with the identity service.

Authentication

Authentication is an integral part of an OpenStack deployment and so we must be careful about the system design. 

Authentication is the process of confirming a user's identity, which means that a user is actually who they claim to be. For example, providing a username and a password when logging into a system.

Keystone supports...