MS Access Licenses

To access server software legally, a Client Access License (CAL) may be required. A CAL is not a software product, rather, it is a license that gives a user the right to access the services of the server. For using management software such as Microsoft System Center, a Management License (ML) may be required for the device being managed.

Individual Product Access Licenses

Windows Server

Windows Server CAL - User / Device
Windows Server Remote Desktop Services (RDS) CAL - User / Device
Windows Server Active Directory Rights Management Services (ADRMS) CAL - User / Device
Windows Server External Connector (for external users / devices)

Exchange Server

Exchange Server Standard CALs - User / Device
Exchange Server Enterprise CALs - User / Device
Exchange Server Enterprise CALs with Services - User / Device
Exchange Online Archiving for Exchange Server - ???

SharePoint Server

SharePoint Server Standard CAL - User / Device
SharePoint Server Enterprise CAL (Additive) - User / Device

Skype for Business Server

Skype for Business Server Standard CAL - User / Device
Skype for Business Server Enterprise CAL (Conference) - User / Device (additive)
Skype for Business Server Plus CAL (Enterprise Voice + Telephony) - User / Device (additive)

Microsoft System Center

Microsoft Endpoint Configuration Manager CML (SCCM) - OSE / User
System Center Endpoint Protection SL (SCCM) - Device / User
System Center Data Protection Manager CML (DPM) - OSE / User
System Center Orchestrator (SCO) CML - OSE / User
System Center Operations Manager CML (SCOM) - OSE / User
System Center Service Manager CML (SCSM) - OSE / User
Advanced Threat Analytics Client Management License (ML) !! TO Be CONFIRMED !!
Microsoft Audit and Control Management Server CAL !! TO Be CONFIRMED !!

MS System Center - Link

Microsoft CAL Suite License

Like other CALs, CAL Suites can be licensed on either a per-user or per-device basis. CAL Suites simplify licensing and tracking by reducing the number of licenses that are necessary to access Microsoft servers. CAL Suites may also provide pricing that is more attractive than licensing the equivalent components individually. However, because a suite is a single license—the sum of individual CALs—CAL Suites cannot be split up among multiple users or devices; each CAL Suite is assigned for just one user or device.

The Microsoft Server Client Access License (CAL) Suites consist of two offerings:

Microsoft Core CAL Suite

Windows Server CAL
Exchange Server Standard CAL
SharePoint Server Standard CAL
Skype for Business Standard CAL
Microsoft Endpoint Configuration Manager Client Management License (formally System Center Configuration Manager)
System Center Endpoint Protection Client Management License
Skype for Business Server Standard CAL

Microsoft Enterprise CAL Suite

All the components of the Core CAL Suite (listed above)
Exchange Server Enterprise CAL with Services*
Exchange Online Archiving for Exchange Server
SharePoint Server Enterprise CAL
Skype for Business Server Enterprise CAL
Windows Server Active Directory Rights Management Services CAL
Advanced Threat Analytics Client Management License
Microsoft Audit and Control Management Server CAL
Includes Data Loss Prevention and Exchange Online Protection

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Microsoft CAL Suite Bridge License

Microsoft Client Access License (CAL) Suite Bridges are used when you are transitioning from a CAL Suite (on premises) to a comparable Product and Online Service combination.

CAL Suite Bridges include Server CALs not found in the online service used in place of the CAL Suite. They allow existing CAL Suite customers to retain access rights to on-premises CAL Suite workloads, companywide commitment, and corresponding platform discounts for workloads that are on-premises.