Office 365 by Microsoft

Microsoft 365 Email Essentials
Best Value
10 GB of cloud storage for email, contacts, and calendar sync.

Microsoft 365 Online Business Essentials
50 GB of cloud storage for email, contacts, and calendar sync.
Create, collaborate, and work from anywhere with 1 TB of online storage.
Online only versions of Microsoft 365 web-apps like Excel, Word, PowerPoint, etc.

Microsoft 365 Business Professional
50 GB of cloud storage for email, contacts, and calendar sync.
Create, collaborate, and work from anywhere with 1 TB of online storage.
Download full suite of Microsoft 365 apps like Excel, Word, Powerpoint, etc. on five devices.