To put it simply, Office 365 brings the best tools to perform in a modern workplace. It is the product of Microsoft accepting that a lot of the users of its traditional Office offerings are no longer tied to a desktop, they are mobile, and those things shouldn’t stop them from being productive.
Microsoft also embraced the fact that their users needed better tools for collaboration as well as better and persistent access to their important documents. Office 365 also supports Microsoft’s vision of cloud computing, specifically that of running a company’s groupware suite of apps.
With Exchange Online, SharePoint Online and Microsoft Teams, users get all the benefits of accessing their email, calendar, company resources, and communication tools without the need of an extensive infrastructure or a big IT department.