The emphasis of this chapter will be the value of quick iteration: Quick over quality iteration, as per Boyd's law (you might recall the OODA principle mentioned in Chapter 1, What Is DevOps and Should You Care?).
By iteration, I am referring to a software development cycle, from the moment a piece of code is written, published (committed to version control), compiled (if needed), tested and finally deployed.
Continuous Integration (CI) defines the routines that should be adopted by developers plus the necessary tools to make this iteration as fast as possible.
Let us start with the human factor: