In Azure, what is the function of Role-Based Access Control (RBAC)?

The function of Role-Based Access Control (RBAC) in Azure is to manage user access to Azure resources based on roles. RBAC allows organizations to assign permissions to users, groups, and applications at different scopes, such as subscriptions, resource groups, or individual resources. By using roles, administrators can ensure that users have the appropriate level of access needed to perform their job functions while maintaining security and compliance. This fine-grained access control is essential in cloud environments to limit exposure and minimize the risk of unauthorized access.

Role assignments in Azure are built around specific roles, such as Owner, Contributor, or Reader, which determine the permissions available to the assigned user or group. This approach helps organizations implement the principle of least privilege, ensuring that users only have the necessary permissions and no more.

In contrast, the other choices focus on different Azure functionalities that do not pertain to user access management. The first option discusses resource availability during high traffic; the second refers to creating virtual networks, which involves networking configurations, and the last option relates to cost management without any connection to access control mechanisms.