Roadmaps and their methodology (TRM, Technology roadmapping) are a planning tool for medium and long-term projects which are useful to any business or corporation. Roadmaps cover many aspects that must be taken into account in a company's innovation forecasting and its development over time, such as opportunities to launch new products or to change existing ones, marketing, new markets, competitors, capabilities and skills, weaknesses, results exploitation, goals... The basic beginning information of the Roadmap is the result of research on internal and external factors of the company by asking questions like: What do we produce? Who are we in our sector? What do we want to / can we achieve? What or who is our competition? What do we have and what should we have? This article deals with the historical development of roadmapping and the state of the art of its different methodologies as well as the clusters that generate them (EIRMA, Northwestern, Cambridge, Purdue, Nottingham...) and their distinguishing features.

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