In this chapter, we saw the various gating criteria that need to be adhered to before the application becomes deployable. We also understood how to write unit test cases, how to move the environment-specific configuration out of the application, and finally, how to use the built-in microkernel to deploy and run Akka applications.
In the next chapter, we will cover the different techniques available for scaling out your application using the concept of remote actors. We will cover topics such as remote actor setup, lookup, and deployment; routing and data serialization for over-the-wire transmission; and the various events generated by remote actors and how we can tap into them.