Two interesting side-topics included in this post: 1) How the Cloud Programmability Team is dealing with the impact of .NET 4.5 on supporting multiple .NET ver

Two interesting side-topics included in this post: 1) How the Cloud Programmability Team is dealing with the impact of .NET 4.5 on supporting multiple .NET versions. (There is a lot of "they said it won't break much" hand-waving on other blogs.) 2) Relying on a test suite when implementing performance enhancements.