Codes & Classifications
Standard Industrial Classification (SIC)
A legacy 4-digit classification system for industries that has been largely replaced by NAICS codes.
In context
How Standard Industrial Classification works in supplier diversity
SIC codes were the standard industry classification system until NAICS was adopted in 1997. Some databases, reports, and older systems still reference SIC codes. Each SIC code corresponds to one or more NAICS codes.
Example
Real-world example
The certification quiz checks your business against every certification we track. The result is a ranked list with the buyers each one opens. Or open the certification reference for the full guides.