Which service component belongs to the operate phase?

A.
Systems Migration

B.
Operations Implementation

C.
Systems Acceptance Testing

D.
Configuration Management

E.
Staging Plan Development

Explanation:

Configuration Management provides and maintains reliable, current information about system hardware, software, and applications. It checks whether changes in system infrastructure have been recorded correctly. This service also monitors the status to help ensure that it has an accurate picture of the component version. First is to add, change, replace, or remove configuration items that have appropriate documentation. The next task is to store historical versions of the configurations for rollback and accounting. The second activity within Configuration Management is verifying the configuration management database. This activity entails auditing the system to verify the existence of recorded configuration items.