A recent evolution of the Stage-Gate process. Agile Stage-Gate combines the structure (phases and gates) of the classic Stage-Gate process with the self-organised teams and short cycle iterations of Agile methodologies (most often derived from Scrum).
By introducing short time-boxed iterations that focus on delivering a working product, Agile Stage-Gate aims to increase the frequency and speed of feedback from customers and users. Thereby permitting teams to focus on developments that deliver the most value to the organization and its customers, and to adapt quickly to changes in the market.
see also: agile methodology, stage-gate®, scrum related articles: planisware enterprise demo: combining agile and stage-gate for new product development