Kurt Shintaku's Blog

Ever wonder what on-prem Client Access License (CAL) rights customers get with Office 365 Subscription Licenses?

Here’s a post that goes over this in a nice table from the Volume Licensing Blog:

• Licensing How To: Using Office 365 user licenses to meet CAL requirements
  https://blogs.technet.microsoft.com/volume-licensing/2013/10/10/licensing-how-to-using-office-365-user-licenses-to-meet-cal-requirements/

The good news is that Office 365 Enterprise E3 & E5 provide both the "on-prem Standard CALs & Enterprise CALs" for Exchange, SharePoint, & Lync/Skype for Business – not just the on-prem Standard CALs. (Note: The E5 license replaced & became a superset of the E4 license)

Here’s the table from the site that gives some orientation around what subscription gets what CAL right: