Answer
JWT is a compact token format for authentication, storing encoded user info verified using a secret or key.
Quick Answer
JWT is a compact, self-contained token for authentication. It contains three parts (header.payload.signature) — the payload carries user data (id, role), and the signature verifies it wasn't tampered with. Server issues a JWT on login; the client sends it in the Authorization header on subsequent requests. No session storage needed.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ