Is it true that Yammer is only available as a cloud service that can be integrated with On-Premise SharePoint Server 2013?

Can yammer stay on-premise in conjunction with On-Premise SharePoint? Some organizations do not want mission critical discussions to host in cloud but still want to benefit from yammer on-premise. Are there any technical diagrams that will explain different Yammer topologies?

Than

Yammer itself is cloud only

Hi,

If you want to use yammer in SharePoint on-premise, the following articles for your reference:

Integrate Yammer with on-premises SharePoint 2013

https://www.youtube.com/watch?v=8WX-k7zDWUI

Integrate Yammer with on-premises SharePoint 2013 environments

https://technet.microsoft.com/en-us/library/dn270535.aspx?f=255&MSPPError=-2147217396

http://www.microsoft.com/en-us/download/details.aspx?id=39357

Best Regards,

Dennis