With major product announcements and a number of big bets on the future, 2015 is in the running to be one of Microsoft's most important years on record.
Topping it was the launch of Windows 10. First previewed a year earlier, 2015 was the year we finally got to see the new operating system in full. Microsoft unveiled key features, including its virtual assistant Cortana reaching beyond Windows Phone and onto the desktop, and its new Edge web browser.
Windows 10 also brought a new Windows Universal App Platform that lets developers build one app that works across Windows 10 Phones, tablets and computers. It’s part of Microsoft’s play to try and raise the number of apps available for Windows 10 tablets and smartphones by tempting developers with a build once, deploy everywhere strategy.
Since it launched in July, Windows 10 has seen massive adoption. Not everybody likes everything about it and Microsoft has made its share of missteps, like keeping details about what personal information was sent from the OS to its servers under wraps until well after users raised privacy concerns about it. But overall, it has been very positively received.