Applying SRE
As you've learned throughout this chapter, DevOps is a set of principles and a working culture. On the other hand, SRE is a set of technical practices where many of the underlying principles are similar to those of DevOps. An analogy to object-oriented programming is often made to describe SRE: if DevOps is a class, SRE is an object that instantiates the class. In other words, SRE is a practical implementation of an otherwise abstract set of principles. Moreover, it "extends" the class to include its own unique methodologies.
It doesn't make much sense to start a DevOps journey by hiring "DevOps engineers" and procuring tools. Even the role of a DevOps engineer shouldn't yet exist unless you have already established a basic DevOps foundation. It's easy to fall into the trap of thinking that simply hiring engineers who are well versed in the DevOps ways of working will bring DevOps to your organization. It might help you get there...
