How do you handle multiple web.config files for multiple environments?

Question

The way I currently handle this is by having multiple config files such as:

web.config
web.Prod.config
web.QA.config
web.Dev.config

When th

Answer 1

Transforms seem really helpful for this. You can replace certain sections with different rules.

http://msdn.microsoft.com/en-us/library/dd465318(v=vs.100).aspx