VMware vSAN is a hyperconverged, software-defined storage (SDS) platform that is fully integrated with VMware vSphere.
vSAN features expand with every vSphere version. With that said, it gets quite difficult to keep track of these changes. No need to worry though, the below table lists down the vSAN feature set available with different vSphere versions. VMware have already posted this list online however, I decided to publish this peace of art here as well as it may be a bit challenging to find.
Reference: vSAN features list by version