Groups and roles have some similarities and differences. In {project_name}, groups are a collection of users to which you apply roles and attributes. Roles define types of users and applications assign permissions and access control to roles.
<<_composite-roles,Composite Roles>> are similar to Groups as they provide the same functionality. The difference between them is conceptual. Composite roles apply the permission model to a set of services and applications. Use composite roles to manage applications and services.