The release of ASP.NET forces us to reconsider many preconceptions about the deployment of websites. For example, we need to get used to the possibility of running multiple copies of the same site on a single server, sharing different versions of identically named DLLs. Another thing that developers might find incredible is XCopy deployment, which allows a developer to deploy an application by simply copying files to the target location. There's no need to use the Registry or any complex COM registration.