Hi! i nowadays we have a Splunk license on-premises, but we are in process to move to cloud, part of this process is keep a hybrid schema. For this reason we like know if is possible use the same license (on-premises), because the strategy is move Splunk to cloud (search head) and have three index (2 in on-premises and 1 cloud) . .. this is possible?
So the general answer is, as long as you are moving to your own "Private Cloud", as in, infrastructure you are managing in your own AWS / Azure / GCP, yes you can use your own license in a hybrid manner. You just need to have connectivity to the license master from all your instances.
However, if you're moving to Splunk Cloud, you can't use that license. However, you can talk to your sales rep and they can work something out with your license.