Conceptual integrity refers to how well a system functions as a cohesive whole. Too often, when we strive for scalability and performance, we default to familiar patterns without considering that not all problems can be solved the same way. In this talk, we’ll explore how CQRS and Domain-Driven Design (DDD) work together, offering powerful design principles for effectively modeling and implementing complex domains. Is important also understand when we can use them and treat them as patterns and not silver bullets for every case. By addressing this patterns, developers can create flexible, scalable, and maintainable systems that align closely with business requirements.