ATL Server: High Performance C++ on .NET is the only book on the market written by the same people who created the ATL Server library. Crivat, Grewal, Kumar and Lee—all members of the ATL Server team—provide a comprehensive look at the ATL Server library, which was designed for building high-end web applications and web services.
You won't find such in-depth information written anywhere else. (Even books about ISAPI do not provide insight on the very library designed to simplify its development!) From foundation concepts, to deeper discussion about extensibility and customization, ATL Server: High Performance C++ on .NET covers everything you want to know about the ATL Server framework.