Complex sentence: Microsoft previously maintained a similar digital distribution system for software known as the Windows Marketplace, which allowed consumers to purchase software online and download it to their computer onlineproduct keys and licenses were also tracked by the platform, allowing users to retrieve their purchases when switching computers.
Split into simpler sentences: Microsoft previously maintained a similar digital distribution system for software known as Windows Marketplace, which allowed customers to purchase software online and download it to their computer. Product keys and licenses were tracked by the platform, allowing users to retrieve their purchases when switching computers.