Microsoft Exchange Server Enterprise Client Access License (CAL) for device-based access with Software Assurance included. This is an add-on license that provides advanced compliance, archiving, and information protection features when purchased alongside a Standard CAL.
Specification
License Type: Device CAL (Client Access License)
Edition: Exchange Server Enterprise
License Model: Open Value Licensing (OLV)
Software Assurance: 1 Year included
Quantity: 1 License
Services: Exchange Online Protection and DLP included