Microsoft 365 is a subscription-based service for Microosft Office business productivity software Ie.g., Word, Excel, PowerPoint, ...etc.) and online services
(e.g., Exchange, Sharepoint, ..etc.).
Microsoft 365 plans can inlcude Office software which can run on desktop and mobile devices for both PC and mac.
The benefit of Microsoft 365 is that the subscription includes software updates at no additional cost.
O365 plans can include web-based versions of Office applications and cloud services like Exchange email server, Sharepoint,
Microsoft Teams, and Skype of Business.
Microsoft 365 also includes online cloud storage on Microsoft's OneDrive service.
There are two sets of plans: M365 Business Plans and M365 Enterprise Plans.