What is CORS | Cross Origin Resource Sharing | CORS explained

What is CORS? | Cross Origin Resource Sharing | CORS explained

CORS stands for Cross-Origin Resource Sharing. It is a security feature implemented in web browsers that allows a web page to access resources from a different domain than the one that served the original web page. This feature enables web pages to interact with web services on different domains and allows for a more dynamic and interactive web experience.

Before CORS was implemented, web pages could only request resources from the same domain as the web page itself. This was a security measure designed to prevent malicious scripts from accessing sensitive information on other domains. However, as web applications became more complex and began relying on third-party APIs and services, the need for a way to safely share resources across domains became apparent.

CORS works by adding HTTP headers to requests and responses that specify which domains are allowed to access a particular resource. When a web page makes a request for a resource from a different domain, the server can use these headers to determine whether the request should be allowed or blocked.

Overall, CORS is an important security feature that allows web developers to build more powerful and dynamic web applications while still protecting users' data and privacy.