When’s the last time you did something without knowing how it could turn out? Surprises can add a little excitement to your day-to-day, but one place they’re not really welcome is in infrastructure code. That’s why we have change impact analysis, a method of predicting the effect one change can have on other parts of a system before you make it. Software change impact analysis, as you might imagine, assesses how changes to a piece of software can affect other parts of the same system.