ABAP OOP Design Patterns Part 3: Strategy, Command, and Template Method Patterns in Real SAP S/4HANA Systems

If you’ve been following along with the design patterns series, you already know that OOP patterns aren’t just academic exercises — they’re the difference between SAP code that lasts a decade and code that becomes a maintenance nightmare in six months. In Part 2 of this series , we explored Factory, Observer, and Decorator patterns in depth. Now it’s time to tackle three more behavioral patterns that I reach for constantly in real enterprise SAP projects: Strategy , Command , and Template Method