In this chapter, we defined what a microservice and its architecture means to us. We also had an in-depth discussion regarding what we will see as queues and their different configurations. Without any further ado, let's move on and start talking about some of the pieces of our puzzle. We're going to discuss the fantastic world of open source software and take a look at some of the many tools and frameworks we are highlighting in this book in order to create our ecosystem. This entire book is written, and the software is developed, with the sole purpose of you being able to quickly develop a microservice ecosystem, and there is no better way to do this than to leverage the many great open source contributions made.