In the market of virtualization, there are a ton of options for consumers, prosumers, and enterprise users. One thing that quickly sets apart these different solutions though is cost, where you have hypervisors such as Windows HyperV or VMware ESXi being some of the most expensive, and KVM, Proxmox, and others being effectively free with the exception of support. Synology has been in the game as well with their Virtual Machine Manager, which slots in somewhat in the middle with both no-cost and enterprise options, letting users leverage their existing NAS to run VMs.