Definition of activation

The chain of events that results in the creation of a COM object and returning a valid pointer to an interface on that object.

The process of starting a service program in response to a Service Broker message.

The process of validating software with the manufacturer. Activation confirms the genuine status of a product and that the product key has not been compromised. It establishes a relationship between the software’s product key and a particular installation of that software on a device.

In a sequence diagram, the time period during which an object or actor is performing an action. Activation is represented by a thin rectangle.

The process of assigning an identity on Microsoft Online Services to a user account that has been migrated from a local Active Directory.

Order to active duty (other than for training) in the federal service.