A communication from a customer or end user that one or more specific instances of service delivery are desired. (See also “service agreement.”)

These requests are made within the context of a service agreement.

In cases where services are to be delivered continuously or periodically, some service requests may be explicitly identified in the service agreement itself.

In other cases, service requests that fall within the scope of a previously established service agreement are generated over time by customers or end users as their needs develop.