Congratulations! You finally managed to convince the business that there really is no way to add this important new feature to the old legacy code base without causing major disruptions. But where to go from here? Completely rewriting the old monolithic application that does a gazillion things from scratch may seem tempting but is a gigantic effort with an unforeseeable outcome.
Discover a way out of legacy hell by learning about architectural patterns as well as concrete technical solutions that enable you to gradually move functionality into new software components without the impediments of a full rewrite.