Great. How? Is that recommended? What kind of user rights I need to give redis to manage that instance in my vpc? How to lock that down to the minimum without breaking it? In that configuration, what risks do I have to control for otherwise? ...

All these details should be covered by https://docs.redislabs.com/5.2/rv/how-to/creating-aws-user-r...

That's a shame. I'm trying to not use Amazon, Google or Microsoft, so this means their solution probably won't work for me. Silly really.

RedisLabs's cloud solution is running on all these clouds see: https://redislabs.com/redis-enterprise-cloud/