RankBrain
A Google AI system for understanding relationships between words and concepts. It is not a switch optimised through a fixed keyword density.
Definition and sourcesKNOWLEDGE / FROM A TO Z
Glossary
Technology, explained clearly. Find a term, choose a letter or narrow the topic. Definitions include sources and their review date.
Terms 4 / 685
Clear filtersRanking factors
Signals search systems use to order results. Their importance depends on query and system; no complete public table of fixed weights exists.
Definition and sourcesRich results
Enhanced search-result presentations with additional information. Valid structured data can establish eligibility, but display depends on search systems.
Definition and sourcesrobots.txt
A file defining fetch rules for crawlers that follow them. It is not protection for private data. A blocked address can still appear in results; blocking does not replace authentication or noindex.
Definition and sources