Ralf Groene, a key figure in the design of Microsoft's devices for more than 17 years, has emerged from a short-lived retirement with a new role, as the vice president leading design for Amazon's Devices & Services business.

Microsoft’s former head of design for Windows and devices has started a new role at Amazon this week. Ralf Groene was responsible for the design of Microsoft’s Surface tablet, and worked closely with former Windows and Surface chief Panos Panay on a line of Surface devices over the past decade.

Another key figure behind Microsoft's Surface devices has joined Amazon and former Windows and Surface lead Panos Panay.