Yeah there’s a reason no one’s heard of it. It’s basically the installer & updater for Cloud Foundry but there’s a bunch of other incidental stuff that’s had Bosh Releases made for it over the years, including Kubernetes.

It creates VMs. Mostly Ubuntu Linux but there’s a slightly demented way to deploy Windows boxes too.

Hypervisor support is provided by a plugin system called the Cloud Provider Interface. Last I heard vSphere, GCP, Azure and AWS are all reasonably well tested and maintained by their respective companies. Open Stack technically is there but it’s a nightmare and not well commercially supported. I’ve heard of stuff being deployed to Alibaba and Oracle but never seen those systems myself.

In practice this is mostly used to manage VMs into vSphere clusters.