In Office 365 Enterprise, there are four plans:

• Office 365 ProPlus
• Office 365 Enterprise E1
• Office 365 Enterprise E3
• Office 365 Enterprise E5

The main features of these plans are as follows:

• Office 365 ProPlus:
  • Office installed on PC, Mac, or mobile devices
• Office 365 Enterprise E1:
  • Office on the web
  • 50 GB of mailbox
  • 1 TB of OneDrive for Business
• Office 365 Enterprise E3:
  • Office installed on PC, Mac, or mobile devices
  • 100 GB of mailbox
  • 1 TB of OneDrive for Business
• Office 365 Enterprise E5:
  • Office installed on PC, Mac, or mobile devices
  • 100 GB of mailbox
  • 1 TB of OneDrive for Business
  • Advanced security
  • Analytics (My Analytics)
  • Advanced voice features Public Switched Telephony Network (PSTN)

To view the latest features, go to https://products.office.com/en/business/compare-more-office-365-for-business-plans.