Microsoft 365 Apps includes the Microsoft productivity suite of applications, such as Word, Excel, PowerPoint, Outlook, and Teams for both Windows and Mac devices. Microsoft 365 Apps isn't a web-based version of Office - instead it's a full version of Office that your users install and run on their devices. you'll need to connect at least once every 30 days to ensure your license is still active. Microsoft 365 Apps is updated either monthly or semi-annually with new features, security updates, and other quality updates from Microsoft.