Server licenses

With this license type, a license must be assigned for each instance of the server software that is being run. There are two server editions:
  • Standard: designed for the mailbox needs of small to midsize organizations. Also appropriate for non-mailbox roles in a larger Exchange deployment. This edition supports 1 to 5 mailbox databases.
  • Enterprise: designed for larger organizations that may require a greater number of mailbox databases. This edition supports 1 to 100 mailbox databases.

Client access licenses (CALs)

With this license type, a CAL is required for each user or device that accesses the server software. There are two types of CALs for Exchange, both of which work with either edition of the server:
  • Standard: designed to help users be more productive from virtually any platform, browser, or mobile device, with features in Exchange Server 2016 that help your users be productive no matter where they are—while helping protect your organization's data. To enable Standard CAL features for a user, the user must be licensed with the Standard CAL.
  • Enterprise: 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.

The following table provides a detailed feature breakdown for each CAL.

Feature

Standard CAL

Standard plus Enterprise CAL Tooltip Icon

Email, calendar, contacts, and tasks
Checkmark to show what is included
Checkmark to show what is included
Outlook on the Web (Internet Explorer, Firefox, Chrome, Safari, and Edge support)
Checkmark to show what is included
Checkmark to show what is included
Apps for Outlook and Outlook on the web
Checkmark to show what is included
Checkmark to show what is included
Site mailboxes Tooltip Icon
Checkmark to show what is included
Checkmark to show what is included
Role-based access control (RBAC) capabilities
Checkmark to show what is included
Checkmark to show what is included
Journaling
Per database
Per user/distribution list
Journal decryption
Checkmark to show what is included
Unified Messaging
Checkmark to show what is included
Retention policies
Default and custom
Default and custom
In-Place Archive Tooltip Icon
Checkmark to show what is included
Multi-mailbox search
Checkmark to show what is included
Checkmark to show what is included
In-Place Hold
Checkmark to show what is included
Data Loss Prevention (DLP) Tooltip Icon
Checkmark to show what is included
Information protection and control (IPC): transport protection rules, Outlook protection rules, Information Rights Management (IRM) search
Checkmark to show what is included
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Questions?

In the United States, call (800) 426-9400. In Canada, call (877) 568-2495.

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