Over the years I’ve seen many implementations of an n-tiered application with an anaemic domain model. You know the kind, presentation, service, data access layer. This architecture whilst quick to start building has its problems. Over time, as the application becomes more complex the codebase will become more and more difficult to maintain, often resulting in a ”Big Ball of Mud”. In this talk I will present some ideas that address these maintainability problems using a solution with a domain model and command patterns to give you a clean extensible architecture. Further to this we will explore event sourcing and cqrs and the benefits they can bring. At the end the you will have seen an alternative way of building business applications, especially those with complex business logic.