Final answer:
Change requests in IT service management include requests for changes to service portfolios, services or service definitions, project change proposals, and requests to reboot servers.
Step-by-step explanation:
A change request is a formal proposal for a change to be made. In the context of IT service management, change requests could include:
- Request for change to a service portfolio: This could involve adding or removing services from the portfolio.
- Request for change to a service or service definition: This could involve modifying the functionality or characteristics of a service.
- Project change proposal: This could involve proposing changes to a project's scope, timeline, or resources.
- Request to reboot a server: This could be a simple change request to restart a server.