Overview of continuous integration

Let's understand what continuous integration means in simple English. 

Continuous Integration (CI) is a fundamental or base DevOps practice to commit code to a shared repository such as Git or SVN based on the bug fixes or feature completion. This change is verified against automated build using tools such as Ant or Maven, static code analysis tools such as SonarQube, and unit test execution with tools such as JUnit for Java.

Understanding of the CI differs based on what you have in practice while implementing it, but the core remains the same. Essentially, it is an application development practice. Team members share the code in the shared code repository and that results in integration. In the DevOps culture, we focus on collaboration and communication a lot. At first glance, it seems in place, but in practice, it is very difficult to get that culture into the mindset of developers, testers, and the operations team. 

The obvious question here is, why are...