I think this article[0] is very well written and clearly explains the problems with provisioning resources in multiple clouds. Yes, there are tools that allow you to do it, however you give up most of the reasons for going into the cloud.
Switching between cloud providers is much easier than going from on-prem to the cloud. So, once your systems are "cloud" ready you should be able to avoid vendor lock in naturally.
Switching between cloud providers is much easier than going from on-prem to the cloud. So, once your systems are "cloud" ready you should be able to avoid vendor lock in naturally.
[0] https://bravenewgeek.com/multi-cloud-is-a-trap/