HTTP status codes are vital responses from the server to the browser, indicating the success or failure of a request. These codes range from 100 to 599, categorized into informational, success, redirection, client error, and server error responses. For instance, 200 means ‘OK,’ while 404 signifies ‘Not Found.’ Understanding these codes helps in diagnosing and resolving web issues, improving user experience, and enhancing SEO performance by ensuring search engines can efficiently crawl and index your site. Monitoring these codes ensures a healthy, accessible, and user-friendly website. Learn more about HTTP Status Codes!