Evo Principle 9:

Evo leads to early, and on-time, product delivery - both because of selected early priority delivery, and because we learn to get things right early

• Obtaining early market and technical feedback results in increased feature evolution and customer satisfaction. (H1)
  • but this increases schedule estimation error. (H2)
  • but early market feedback increases bugginess. (H4)
• High-level architecture specification provides for more flexible product development measured in terms of feature evolution. (H7)
• Evolutionary development allows flexibility in product development allowing the project team to make requirements, functional changes and add code for new features late into the project. (H8)
• Design reviews identify any consistency problems earlier than the later testing activities that require a running product (H12)
• Running regression tests, each time developers check changed or new code into the project build, improves product quality. (H14)
• If the project team has enough time for final product stabilization phase, then they have completed the project on time. This results in lower schedule estimation error. (H20)
• The project team may decide to spend time on final product stabilization versus making late design changes that incorporate market and technical feedback. This may result in increased % of original features implemented in the final product. (H21)