Strangler Fig and layered cake: restructuring a monolith

How to manage a quaint, yet indispensable software monolith? The one that outlived (twice) your shiny frameworks. The one that was created when 10 people was all it took to run the business. Well, you "just" need some clean architecture, and an understanding of Conway's law for decoupling, a healthy use of the Strangler Fig pattern to survive change, and some inspiration from the DDD community to make the app tell the story of your organization.