A prototype is an early, trial version of a product/service made to test and improve ideas before the final version is created. Prototype is a preliminary, often incomplete, version of a product, ...

Ryan Gray is Co-Founder and CEO of SGW Designworks, a product engineering and design firm featured in The Lean Startup. It’s very common for a prospective client to come to our product development ...

How to work out a prototyping strategy that eases the transition to mass production. The advantages of using data from devices in the field to improve designs over time. How to make products more ...

Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.