Yeah, cloud option isn't available for the product we're building (very specific needs with regards to data and services geo location).

But to me it looks like that the target audience is anyone operating a Kubernetes cluster as it seems to be the most mature option for managing secrets that is also well integrated into Kubernetes. And their open source version already provides quite a few features.

At least that's the vibe I got from reading various comparisons and blog posts about secrets management.