Website Hardware Scaling

This my Answer to the stackoverflow question: Website Hardware Scaling:

The talk Scalable Web Architectures Common Patterns & Approaches from Cal Henderson (Yahoo) on Web 2.0 Expo was quite interesting. I thought there was an video, but I could not find it. But here are the slides:

http://www.slideshare.net/techdude/scalable-web-architectures-common-patterns-and-approaches