Microsoft is offering Windows 8.1 developers a software development kit that includes a unique identifier for ad-targeting purposes. Microsoft says the ad ID can also be used for analytics and app-discovery. In addition, Microsoft has purchased Apiphany, an application programming interface management company for Windows Azure. Microsoft UK is also releasing a survey suggesting the ecosystem of development has broadened beyond what was once a small professional club to include hobbyists and individuals.
Microsoft's latest Windows 8.1 SDK includes an ID for ad targeting