site2vec Embedding

What is site2vec?

site2vec explains why topical focus is so critical for rankings: Google calculates a mathematical vector for your entire website and compares it with the vectors of individual search queries. When your website is clearly thematically aligned, the vectors are closer together — and Google rates your pages as more relevant. Combined with siteFocusScore and siteRadius, site2vec forms Google’s system for evaluating topical authority.

site2vec is an embedding method used by Google that represents an entire website as a mathematical vector in high-dimensional space. Similar to how word2vec vectorizes individual words, site2vec combines all content, topics, and signals of a domain into a single vector. This vector describes the thematic DNA of a website and allows Google to compare domains with each other and classify them thematically.

For SEO strategy, site2vec has fundamental significance. Google can use it to recognize whether a website is thematically focused or covers a broad range of topics without a clear emphasis. Websites with a coherent thematic profile — such as a domain that consistently focuses on SEO — presumably receive a clearer vector than an eclectic general-interest magazine. This correlates directly with the siteFocusScore and siteRadius.

In practice, understanding site2vec supports the decision for a thematically focused content strategy. Instead of covering arbitrary topics, you should plan your website as a Topical Map and systematically build related topic clusters. This creates a strong, clear vector that signals your expertise to Google.