Office 365 E3 & E5 Business licensing

With Office 365 E3 you have the benefit of having the desktop versions of the apps, which means you get all the premium features and full offline access across all of your devices.

Everyone of your users can install Office 365 E3 on up to five computers, five tablets, and five smartphones.

But it only the basic draw of Office 365 E3. You’re not choosing between cloud-based or desktop services—you get them both.

On top of that, Microsoft includes data loss prevention, compliance tools, and five layers of security. Some of the hallmark features included with Office 365 E3 subscriptions:

• Business-class email: 100 GB Outlook mailbox per user; send attachments up to 150 MB.
• Unlimited OneDrive storage: Subscriptions with more than five users start off with 5 TB and can get more. Subscriptions with four or fewer get 1 TB per user.
• Safe and secure collaboration: SharePoint, Teams, and Yammer are fully integrated with your core office apps. You can store, share, and co-edit files across the enterprise in whatever communication platform suits you best. You can also share files with folks outside the organization, controlling guest access as needed.
• Rights management services: Azure Rights Management lets you control sensitive documents, emails, and information.
• Automation: With Flow and PowerApps, you can boost productivity by building workflows that save time and automate routine tasks.

In summary, Office 365 E3 gives a business everything they need to expand without limits and without the headache of your Admins having to be at each desktop as they will have all the latest tools at their disposal.

E5 includes all the features in E3 and add more features, such as Advanced Thread Protection, PSTN conferencing to facilitate Skype for Business meetings, and Cloud PBX services to give you cloud-based call management (placing, receiving and transferring calls on multiple devices).