Think big, but start small - that's the idea behind Lean Startup. Doing as much as necessary, but using as few human, financial and time resources as possible. If a team has an idea, it must turn it into a sufficiently functioning prototype as early as possible and test it with customers. Even though the method has "startup" in its name, it is suitable for almost all companies. After all, planning for the future, reacting in an agile manner to changes, being fast - these are the requirements of all companies today that are facing up to digitization and globalization and their disruptive transformation processes.