SAM.gov
The federal system vendors use to register entities and maintain award eligibility information.
Glossary
Government registration glossary
Short definitions for the identifiers, systems, and classifications used in federal vendor records.
Unique Entity ID
UEI
The federal identifier assigned to an entity record in SAM.gov.
CAGE Code
A supplier identification code used across federal procurement and logistics systems.
NAICS Code
An industry classification code used to describe the type of work a business performs.