Presence

 prerequisites: 

Microsoft Lync Server

, 

Skype for Business

, and 

Skype for Business Online

For 

Microsoft Lync Server

 and 

Skype for Business

, the 

Presence

 service has the same predeployment requirements as the 

Connect

 service. The 

Presence

 service does not require its own 

Microsoft SQL Server

 database when it is installed on a computer with the 

BlackBerry Push Notifications

 (

Mail

) service or on a computer with the 

Connect

 service.

 If you installed the 

Presence

 service on a separate computer, you must create a database. It is recommended to call the database BEMS_Core2. 

 For more information about prerequisites, see the following: Prerequisites: Connect for Microsoft Lync Server and Skype for Business

Environments that use 
Microsoft Lync Server
 or 
Skype for Business
 on-premises using trusted application mode, see Prerequisites: Connect for Microsoft Lync Server and Skype for Business.
Environments that use 
Skype for Business Online
 or 
Skype for Business
 on-premises using non-trusted application mode, see Prerequisites: Connect for Skype for Business Online.
Presence
 for 
Skype for Business Online
 or 
Skype for Business
 on-premises using non-trusted application mode doesn't use the 
Good Technology Presence
 service. Therefore, there is no requirement to start the service, and no requirement to make sure that an MTLS certificate is issued for the 
Presence
 service to use. 
Presence
 status is provided by 
Good Technology Common Services
 service.