A developer merges a small change on Friday afternoon. Everything looks fine. On Monday morning, checkout is broken, three other features are failing, and nobody knows which of the last 40 commits caused it.

This is the exact problem continuous integration solves. So, what is the main benefit of continuous integration in testing? In one line

The main benefit of CI in testing is fast feedback bugs are caught within minutes of the commit that caused them, when they are cheapest and easiest to fix.

Everything else, like better code quality, safer releases and happier teams, follows from that one idea.

What is continuous integration?

Continuous integration (CI) is a development practice where every code change is automatically built and tested as soon as it is pushed to a shared repository.…