Explore advanced domain modeling techniques in this conference talk from PHP UK Conference 2014. Delve into tactical Domain Driven Design concepts to create robust and expressive domain models. Learn how to effectively use Value Objects, Entities, Repositories, Encapsulated Operations, and the Specification pattern to address common challenges in software development. Discover strategies for placing business logic, protecting code from abuse, and implementing and testing queries. Move beyond traditional design patterns to evolve structural data models into rich behavioral models that capture true meaning and maintain consistency. Gain insights on creating domain models that are not only unbreakable and beautiful but also effectively represent complex business rules in the language of the business.