The Onion architecture aims at emphasizing the importance of separation of concerns throughout the system where layers are only dependent on layers more central layers within the architecture.

Extending Umbraco CMS onto our ASP.NET MVC websites proved to be one of the major turning points in our web development process.  Here's how we did it...

Splitting the code into a number of tiers can be beneficial in many ways especially when it comes to maintainability, scalability and flexibility