A top product executive at Microsoft who launched its Surface line of devices and Windows 11 is leaving the company. A staff memo says Panos Panay is stepping down after nearly 20 years at Microsoft, most recently as chief product officer. Panay was credited with creating the Surface brand of computer and other mostly high-end devices. Another longtime executive, Yusuf Mehdi, will take lead on the Windows and Surface businesses and products. The note said Panay would be helping with the transition.