Ask HN: AZ Arc, GCP Anthos, AWS Outpost, Crossplane – real developer benefit?

AZ Arc, GCP Anthos, AWS Outpost, Crossplane (and more I am sure) are variants of dealing with multi cloud.

To the developers in the real world, do you see any value with these in your day-to-day work? I've heard lot of elevator pitches, but never real world experiences.