Web Storage (localStorage, sessionStorage, cookies)

The main difference is that cookies support built-in expiration settings while Web Storage doesn't: 1) Cookies can be set with specific expiration dates using 'expires' or 'max-age' attributes, 2) Web Storage has no built-in expiration mechanism, 3) localStorage persists indefinitely unless explicitly cleared, 4) sessionStorage expires only when the session ends, 5) Custom expiration for Web Storage must be implemented programmatically, 6) Cookie expiration is handled automatically by the browser, 7) This affects how each storage type is used for different data persistence needs, 8) Understanding these differences is crucial for implementing proper data lifecycle management.