Check out this illustration of the functions of COM Single Thread Apartment (STA), Multithread Apartment (MTA), and ATL Auto-thread Module with a testing client-server application.
Latest Apartments & Threading Articles
Understanding COM Apartments, Part I
In the first part of a two-part series on COM apartments, Jeff Prosise describes what apartments are, why they exist, and how to avoid the problems that they introduce.
Understanding COM Apartments, Part II
In the completion of his two-part series on understanding COM apartments, Jeff Prosise illustrates why the lessons learned in last month's discussion of COM apartments are so important by giving concrete examples of how this knowledge can help you develop better and more efficient COM applications.
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MFC Integration with the Windows Transactional File System (TxF)
The Transactional File System (TxF), which allows access to an NTFS file system to be conducted in a transacted manner through extensions to the Windows SDK API. MFC 10, has been extended to support TxF and related technologies. This support allows existing MFC applications to be easily extended to support kernel transactions.

Finger Printing is the New Tracking Cookie
Recently one way that developers have been looking to address the cookie abuse problem is via a method known as fingerprinting. Peter Shaw shows you how to generate a fingerprint in C# for use in your own projects.

Introduction to Threading and VB.NET
Hannes du Preez demonstrates how easy it is to work with threads in your VB.NET applications.
How to Create MapReduce Jobs for Hadoop Using C#
This article introduces you to Big Data, Apache Hadoop and MapReduce jobs. We will also learn how to create MapReduce jobs using C#.