The Lean Startup is a book by Eric Ries which talks about a lean method of building your company against the market by putting to test your core hypothesis and beliefs of the company against real customers. The idea is to do this in small sprints or batches so that you can make decisions, and; consequently, change course if needed for the next batch.
This is a small review of the book as well as how is Hubble going to apply the methodology soon!