PXE Boot(Preboot Execution Environment)
Booting a computer from the network instead of a local disk, using DHCP and TFTP to load an OS image.
PXE is handy for deploying many machines or running diskless installs. In a homelab it lets you netboot installers or thin clients from a central server, avoiding USB sticks entirely.
Related articles
DHCP(Dynamic Host Configuration Protocol)
A service that automatically assigns IP addresses and network settings to devices as they join the network.
Wake-on-LAN(WoL)
A feature that powers on a computer remotely by sending it a special network packet.
Headless
A server that runs without a monitor, keyboard or graphical desktop.