Domain Driven Development is software development philosophy, having principles and patterns inside. With DDD, we aim to have highly maintainable, reusable, clean, and loosely coupled solutions aligned with business. However, the result that happen during the implementation phase may be far below expectations. Modularity is one of the key factor for having high quality software, regardless of the practices people use. When DDD and modularity principles come together, simply change the way we look at programming fundamentals. In this talk, Lemi will show you how DDD and Modular Design lead us a better, simpler design than ever. Of course by showing the code.