Windows 10 has become active on over 825 million devices worldwide, based on internal documentation spotted by Thurrott.com.

While Microsoft hasn't released any official numbers regarding Windows 10's install base recently - and last week's Build 2019 developer conference could have been the perfect time to do so - if those numbers are correct, it implies that Microsoft's latest operating-system is within pretty good shape.

The documentation also sheds light on some impressive numbers from Microsoft's Essential Products (EPIC) group. Based on Thurrot.com, Windows 10's mobile apps - for example Android and iOS versions of Edge, Onenote and Microsoft To-Do happen to be downloaded 32 millions times.

The mobile form of Edge has been doing surprisingly well, with 4.5 million downloads, and Microsoft Launcher, a person interface for Android smartphones with a focus on Microsoft services and products, has 4 million monthly active users.

Office 365 is bigger than Spotify and Amazon Prime combined

In other news, it looks like Microsoft's Office 365 subscription services are also succeeding, with a recent tweet by Tren Griffin, a senior director at Microsoft, disclosing that there are now 214 million Office 365 subscribers - which is a lot more than Amazon Prime (101 million subscribers) and Spotify Premium (107 million) combined.

Someone asked me what's the most interesting part of my work. It is this;"Microsoft's Office has become a cloud-based service boasting a lot more than 214 million subscribers who pay around $99 annually; it has more subscribers than Spotify and Amazon Prime combined."May 5, 2019

With those subscribers paying $99 annually each, that's a hefty wad of money heading into Microsoft's coffers.

If anyone doubted that Microsoft could convince people - and businesses - to pay for a regular membership because of its Office products, then these results prove that it can. Very successfully.