Chapter 1. COM+: An Evolution

Innovations in technology do not always take the form of huge leaps and radical paradigm shifts. Often they occur as part of a natural evolution: Two or more related technologies are consolidated into a singular technology that, by virtue of its simplicity, becomes greater than the sum of its parts. So it is with COM+.

COM+ is not so much a new technology as a consolidation of previous Microsoft technologies, mainly transaction processing (MTS) and asynchronous message delivery (MSMQ). These two pre-existing COM-based architectures provide COM+ with a foundation from which many COM+ services originate and others are built. For example, role-based security, object pooling, and synchronization services (all core services ...

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