With a subscription, you get the latest versions of the apps and automatically receive updates when they happen. Office 365 also comes with services like 1TB of OneDrive storage, 60 Skype minutes per month, and Microsoft chat and phone support.
The apps can be installed on multiple devices, including PCs, Macs, iPads, iPhones, Android tablets, and Android phones.
Office 365 is a subscription that comes with premium apps like Word, Excel, PowerPoint, OneNote, Outlook, Publisher, and Access (Publisher and Access available on PC only).