Meaning – The term invocation, refers to the activation of a program or procedure.

Implicit invocation is a term used by some authors for a style of software architecture in which a system is structured around event handling, using a form of callback. It is closely related to inversion of control and what is known informally as the Hollywood principle.

The idea behind implicit invocation is that instead of invoking a procedure directly, a component can announce (or broadcast) one or more events. Other components in the system can register an interest in an event by associating a procedure with the event. When the event is announced the system itself invokes all of the procedures that have been registered for the event. Thus an event announcement implicitly causes the invocation of procedures in other modules.

Example of usage“Once she had completed the and checked it for errors, the only thing left to do was tot invoke it in a process and see how well it performed.”