15 Seconds : Automated Deployment for Side By Side .NET Web Apps for Visual Studio .NET 2003

I had been asked by a client to find a way to "silently" auto-deploy a web app to a remote server everyday as a result of a daily build process. The objective of this was to regularly deliver the application to a testing team for regression testing. I decided I wanted to use MSI (Windows Installer) 2.0 technology to do it, mainly because that's what is built in to the Visual Studio .NET 2003 deployment projects. There was also the requirement to have multiple versions of the same application auto-deployed to the web server, with only one version being active at any given time, and a simple way to switch between versions. This is what the Web Server would look like: