In this chapter, you have learned how to build secure software (and not only microservices), although it is a subject big enough to write a full book on it. The problem with security is that companies usually see investing in security as burning money, but that is far from reality. I am a big fan of the 80-20 rule: 20% of time will give you 80% of features and the 20% of missing features will require 80% of the time.

In security, we really should be aiming for 100% coverage; however, the 80% shown in this chapter will cover majority of the cases. Anyway, as I mentioned before, a software engineer should be up to date with security as a flaw in the security of an application is the easiest way to kill a company.

We have also been talking about traceability and logging, one of the most ignored subjects in the modern software engineering that are becoming more and more important, especially if your software is built using a microservices approach.