Some SaaS Links
I’m sure this is not all of the material around, but here is a brief list of Software as a Service links that I find useful. Feel free to propose more links. Enjoy 
Introduction
Guidance
- LitwareHR, a SaaS reference implementation application: community website
- MSDN’s SaaS Architecture section
- Skyscrapr’s “Architects in Action”
Papers
- Software as a Service (SaaS): An Enterprise Perspective (paper by Gianpaolo Carraro and Fred Chong)
- Architecture Strategies for Catching the Long Tail (paper by Gianpaolo Carraro and Fred Chong)