Application Architecture for .NET: Designing Applications and Services

A new MSDN document:

This guide provides design-level guidance for the architecture and design of .NET Framework applications and services built on Windows 2000 and version 1.0 of the .NET Framework. It focuses on partitioning application functionality into components, walks through their key design characteristics, explains how security, management and communication apply to each layer, and provides information on how the components should be deployed

More reading for the holidays...