The company that created Basecamp, and more importantly for my own work, Rails, this is a write up how there relatively small team can accomplish such high quality work. Agile? Yeah, but definitely with its own style:
- 6 weeks work cycles (instead of typical 2 week sprints for scrum),
- well balanced scope, but not overly designed before going into a cycle
- betting that work can be done in the timeslot, instead of estimating how much time a small piece of the puzzle can be solved
- … and more…