I am working on creating a SharePoint 2013 hybrid environment with SharePoint online (Office 365).
One pre-requisite for this is replacing in-built certificate of STS (Security token service) with an actual certificate. Steps for same are presented in this URL - https://technet.microsoft.com/en-IN/library/dn551378.aspx
Question - While procuring actual certificate from my CA provider, I need to provide a URL against which the certificate will be issued. What will that URL be? Can it be URL for any web-application in the farm? Or it has to be something like "*.mydomain.com" ?