To verify user rights to services in cloud computing, which aspect is primarily examined?

The focus on verifying user rights to services in cloud computing centers around the concept of authorization. Authorization is the process that determines what an authenticated user is allowed to do within a cloud service environment after confirming their identity. It establishes the permissions and access levels that users have, governing their ability to perform specific actions, such as reading, writing, or deleting data, depending on their roles within the system.

In cloud environments, once a user is authenticated (which confirms who they are), authorization comes into play to ensure that the user only has access to the resources and services that align with their permissions. This is crucial for maintaining security and control within cloud infrastructures, as it helps prevent unauthorized access and potential data breaches.

The other concepts also play important roles in cloud security, but they address different aspects. Federation relates to federated identity management and how identities are managed across different systems or services. Authentication specifically involves verifying the identity of a user, while Single Sign-On (SSO) pertains to the ease of accessing multiple applications with a single set of credentials. However, none of these directly address the user's rights and access permissions within the cloud services, making authorization the key aspect being examined in this context.