CORS
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May 1, 2024
Updated June 21, 2025
21 minute read
Understanding Cross-Origin Resource Sharing (CORS): A Comprehensive Guide
Cross-Origin Resource Sharing, commonly known as CORS, is a fundamental mechanism in web technology that enables controlled access to resources located outside of a given domain. At a high level, CORS is a system that uses HTTP headers to tell a browser that a web application running at one origin (a combination of protocol, domain, and port) has permission to access selected resources from a server at a different origin. This is crucial for building modern, interactive web applications that often need to fetch data, scripts, or other assets from various sources across the internet.
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Find a path to becoming a CORS. Learn more at:
OpenCourser.com/topic/81qt00/cor
