Webmatrix 3 is cooler than you might think. It offers a very convenient set of features which to my mind are a complement to, and not replacement for, a more robust development environment. Particularly for doing quick touch-ups to HTML or CSS for an existing site, tracking such changes in source control, and easily publishing the updates to Azure or your standard hosting provider. The addition of source control integration and Azure deployment make Webmatrix exceptionally useful in addition to your more robust development tools.