Summary

In this chapter, we have learned about domains, sub-domains, ubiquitous language, and bounded contexts. These are all core components of DDD.

We explored some domain-driven Go code for the first time and saw how even minor changes could improve the readability of our code and make it align more with the domain we are developing software for.

We also learned about some new patterns—Open Host Service, published language, and anti-corruption layers. Finally, we explored some tools (OpenAPI and gRPC) we can use to make publishing language easier.

In the next chapter, Aggregates, Entities, and Value Objects, we will explore more DDD terminology and learn how these concepts can help make our domain-driven code more robust and scalable.