CORS
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Same-origin policy
Before talking about CORS, we must first understand a security mechanism called the same-origin policy. This policy restricts how a document or script loaded by one origin can interact with a resource from another origin.
This isolates potentially malicious documents. Consider a hacker website with a script that requests resources from our server. Since the hacker website does not have the same origin as us, they can't access our website by the same-origin policy.
Define. Origin
Overview
Cross-Origin Resource Sharing (CORS) allows server
