One idea wearing many costumes
Every driver shares the same essential job — translate requests, carry answers, hide complexity — but the demands of that job change enormously depending on what is being served. A part that stores precious data worries above all about never losing it, while a part that paints the screen worries about finishing each frame in time.
This is why there are families of drivers rather than a single universal one. Each family is the same core idea tuned to a particular kind of work, shaped by what matters most for the component it serves.






