Glossary
WhatisCORS(Cross-OriginResourceSharing)?
Software Development Glossary & Terms
CORS (Cross-Origin Resource Sharing)
Definition.
CORS (Cross-Origin Resource Sharing): A mechanism that allows restricted resources on a web page to be requested from another domain outside the domain from which the first resource was served.
In Practice
This is usually the error that shows up the first time a Next.js frontend tries to talk to a separately-hosted Django API — getting the allowed-origins list right (and not just wildcarding it) is a small but easy-to-get-wrong step in any decoupled frontend/backend setup.
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