CORS (Cross-Origin Resource Sharing)

CORS (Cross-Origin Resource Sharing) is a security feature in web browsers that controls how web pages from one domain can request resources from another domain. It ensures that websites can't freely access data from other sites without permission, protecting user data and maintaining privacy. When a website tries to access a resource on a different domain, the browser checks CORS policies set by the server. If allowed, the resource is shared; if not, the browser blocks the request. CORS enables safe, controlled sharing of resources across different websites and servers.