the probe remedygtw v2.0 support Remedy in the SaaS version? and the probe can run in Windows 2012?
The Remedygtw probe has not been updated since 2012.
So no testing was done with the SaaS version for this probe.
All Service desk Gateway integration are moving to sdgtw probe.
full documentation is here
sdgtw (Service Desk Gateway) - CA Unified Infrastructure Management Probes - CA Technologies Documentation
it looks like the Remedy integration is only of on premise at this point.
8.1, 9.1 (On-Premise)
I reached out to the SaaS team on this; it is not available.