Layers Talk

I put together a talk on layers for TechDays. This is part of a new track that Microsoft is piloting in Vancouver and Toronto. Due to the constraints of time, I had to eliminate some of the subjects that I was originally going to cover. One of them was scalability. I've included the original layout at the end here and hopefully I will be going back to this post and adding some links to subsequent posts. Design by Contract was added as the replacement subject.