Lifecycle - II
IObjectControl interface is used by MTS to inform the server object about the state changes of an object.
MTS defines a new concurrency abstraction called an activity. An activity is a logical thread of execution created on behalf of a single base client. Activity represent a set of objects that belong to a single user. MTS creates a new STA for each new activity until the STA pool reaches its limit (100). After the limit, MTS starts starting multiple activities to each STA.