Office365

Office365 Essentials

Business class exchange email with 50GB storage
Online version of Office
1TB File Storage and Sharing
Unlimited Online Meetings
Corporate Social Network

Office365 Business

No exchange email service
Full Office Applications
Office on Tablet and Mobile
Online version of Office
1TB File Storage and Sharing

Office365 Business Premium

Business class exchange email with 50GB storage
Full Office Applications
Office on Tablet and Mobile
Online version of Office
1TB File Storage and Sharing
Unlimited Online Meetings
Corporate Social Network