Appendix: Where to Go From Here
Congratulations! Thanks for reading and working through the whole book. The main objective of this book is two-fold: to show that any PHP developer can pick up this book and write Lumen APIs with no previous Laravel Experience, and to let you practice test-driven development in an API context.
A wonderful artifact of writing this book in a test-driven manner is that I have high confidence that the code samples in this book do work. I am not claiming that the book is 100% free from bugs or full test coverage, but the code feels solid .
There are many things not covered in the scope of this book that may one day become a follow-up or a more advanced book. For instance, I did not cover writing APIs with multi-tenancy ...