Technical Definition
HTTP status codes are server responses indicating request results. SEO-relevant codes: 200 (OK, page exists), 301 (permanent redirect), 302 (temporary redirect), 304 (not modified), 404 (not found), 410 (gone permanently), 500 (server error), 503 (service unavailable). Proper status codes are crucial for crawling, indexing, and site migrations.
Simple Explanation (ELI13)
HTTP status codes are numbers that tell browsers and Google what happened when they tried to visit a page. 200 means 'here's the page.' 301 means 'this moved permanently.' 404 means 'doesn't exist.' 500 means 'something broke on our end.' Using the right codes helps Google understand your site correctly.
Related Terms
301 Redirect, 404 Error, Server Response, Crawling
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