Fabrication
Panelization
In plain English
Grouping many copies of a board onto one big sheet so the factory makes them all at once, then snaps them apart — like baking a whole tray of cookies instead of one.
The technical version
Panelization is the step-and-repeat process of laying out multiple copies of a board on a single fabrication panel, along with coupons, fiducials, and rout or scoring paths. It maximizes material yield while respecting depaneling stress and tooling keep-outs. Good panelization directly lowers unit cost at volume.