The complete programmer's guide to Microsoft's all-important middleware technology, COM+ is the core of Microsoft's N-tier strategy and the foundation for all upcoming Microsoft products. In this developer's guide, Roger Sessions, a former CORBA advocate and the author of the best-selling COM and DCOM, along with Piotr Okonski, a Microsoft insider, bring developers up to speed on how COM+ works and how to use it to develop scalable enterprise applications.