COM: Delivering on the Promises of Component Technology

Welcome to Microsoft's Component Object Model (COM) technologies Web site. This site encompasses information about COM-based technologies such as Distributed COM (DCOM), COM+, Microsoft® Transaction Server (MTS), ActiveX® Controls, and more.

For a brief overview of COM and COM-based technologies, please see About Microsoft COM.

What's New

It’s Simple to Build PerfMon Support into Your Apps With a Little Help from COM , Ken Knudsen
In his article in the February 2000 issue of Microsoft Systems Journal (MSJ), Ken Knudsen shows how to use COM for new ways to harness the power of performance monitoring for your own applications.

Use AppCenter Server or COM and MTS for Load Balancing Your Component Servers , Timothy Ewald
In his article in the January 2000 issue of Microsoft Systems Journal (MSJ), Timothy Ewald explains how the new Component Load Balancing (CLB) service in the upcoming AppCenter Server works and how to implement it for use with COM and Microsoft® Transaction Server (MTS) today.

Middle-Tier High-Speed Data Caching Involving COM/MTS and COM+
This article provides information and resources for Microsoft technologies that can be used for middle-tier caching with data accessed from a COM component hosted in MTS or COM+.

More Reusable MFC Goodies: Simplify Your (Programming) Life with the COMToys Library , Paul DiLascia
In his article in the December 1999 issue of Microsoft Systems Journal (MSJ), Paul DiLascia shows how he used MyBands and the BandObj framework as a test bed to develop a library called COMToys.

Windows DNA Performance Kit Beta Update
An update to the Windows DNA Performance Kit Beta is now available for download.

COM Legend

Last Updated: 12/29/99