White Paper
Microsoft's distributed COM (DCOM) extends the Component Object Model (COM) to support communication among objects on different computers-on a LAN, a WAN, or even the Internet. With DCOM, your application can be distributed at locations that make the most sense to your customer and to the application.
Because DCOM is a seamless evolution of COM, the world's leading component technology, you can leverage your existing investment in COM-based applications, components, tools, and knowledge to move into the world of standards-based distributed computing. As you do so, DCOM handles low-level details of network protocols so you can focus on your real business: providing great solutions to your customers.