Office 365

Office 365 Business Essentials

Online versions of Office with email and video conferencing
Exchange Online, OneDrive for Business, Skype for Business, Teams, SharePoint, Yammer
Email with 50 GB mailbox
1 TB file storage and sharing
HD video conferencing
Office Online

Office 365 Business

Full Office on PC/Mac with apps for tablets and phones
Outlook, Word, Excel, PowerPoint, OneNote, Publisher, OneDrive for Business
(Email not included)
1 TB file storage and sharing
Office apps on tablets and phones
Up to 5 installs per license

Office 365 Business Premium

All the features of Business Essentials and Business in one integrated plan
Fully installable Outlook, Word, Excel, PowerPoint, OneNote, Publisher, OneDrive for Business, Skype for Business, Teams, SharePoint, Yammer & Exchange Online
Email with 50 GB mailbox
1 TB file storage and sharing
Up to 5 installs per license