Later search engines introduced so-called XML sitemaps meant to replace manual “search engine submission.” More than 25 years later, HTML sitemaps are less preferred.

Google's John Mueller advises using semantic HTML. Though not a ranking factor, it helps search engines understand content and boosts accessibility.

Learn how to use HTML tags to structure web pages, improve SEO, and create better user experiences.

A start-up called Perplexity shows what’s possible for a search engine built from scratch with artificial intelligence.