Summary

In this chapter, we learned about three different service types – application, domain, and infrastructure – and we saw some examples of what they might look like. We also learned about repository layers and their benefits. Finally, we looked at how we can use factories to simplify object creation as our application gets more complex.

This wraps up Part 1 of this book. By now, you should have a preliminary understanding of all the concepts you need to implement a service using DDD. In Part 2 of this book, we will put our new knowledge to good use as we build an entire service from scratch, using everything we have learned so far and a couple of new topics wherever relevant.