Type-1 Hypervisor: Proxmox is a type-1 hypervisor, which runs directly on the hardware, offering better performance and efficiency compared to VirtualBox, a type-2 hypervisor that runs on top of an existing operating system.

Cluster and Scalability: Proxmox supports clustering, allowing you to manage multiple servers as a single entity. This is ideal for expanding your homelab setup.

Built-in Features: Proxmox comes with features like live migration, backups, and high availability, which are not natively available in VirtualBox.

Web-based Management Interface: It offers a comprehensive web-based interface for managing VMs and containers, making it easier to manage your homelab remotely.

Container Support: Proxmox natively supports LXC containers, which are more resource-efficient than full VMs.