Features don’t necessarily aggregate up to “experiences” and I would argue that today’s winning approach is …
… Experience-Driven Development
… Where experience means user’s can perform their goals successfully… the software makes them feel good and succeed at their goals. It’s an integration of scenarios + experiences … and persona-based scenarios with goals.
This shifts the focus to lighting up experiences over just shipping features or scenarios. It also means a focus on “Experience Step-Throughs” to model and prioritize what you ship. It seems like today’s software success is about shipping the vital few experiences that make an impact. I know it seems like a subtle shift, but I still come across too many glitches that get in the way of great software … … I think we need “experience-first” … or more “experience-driven.”
Experiences are the differentiator ... you can have scenario parity or feature parity, yet miss the boat on experience. It's beyond user stories and scenarios with acceptance tests (though that's a good start.) It's about measuring efficiency and effectiveness of the user experience.