Exchange Server Enterprise 2016 SNGL OLP NL

Designed for larger organizations that may require a greater number of mailbox databases. This edition supports 1 to 100 mailbox databases.
Designed to allow organizations to reduce the cost and complexity of meeting compliance requirements with new integrated archiving functionality and information protection capabilities, while also helping you cut costs by replacing legacy voice mail systems with Unified Messaging. The Enterprise CAL is sold as an add-on to the Standard CAL—to enable Enterprise CAL features, the user must be licensed with one Standard CAL plus one Enterprise CAL.