404 compliance

404 compliance refers to a website's adherence to standards for displaying a clear and helpful message when a webpage cannot be found. When a user tries to access a page that doesn't exist or has been moved, a 404 error appears. Being 404 compliant means the website provides a consistent, informative error page that guides users back to useful content or navigation options, improving user experience and making it easier to find what they're looking for. It's about following best practices to handle missing content gracefully and professionally.