Which HTTP header is crucial for handling CORS in web applications?

  • Access-Control-Allow-Origin
  • Cross-Domain-Allow
  • Allow-Access-Control
  • Origin-Control-Allow
The crucial HTTP header for handling CORS in web applications is Access-Control-Allow-Origin. This header specifies which domains are allowed to access resources on the server. It plays a central role in configuring the CORS policy for a web server.
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