The Topic Layer

Google | The Keyword: The Topic Layer is built by analysing all the content that exists on the web for a given topic and develops hundreds and thousands of subtopics. For these subtopics, they can identify the most relevant articles and videos—the ones that have shown themselves to be evergreen and continually useful, as well as fresh content on the topic. They then look at patterns to understand how these subtopics relate to each other, so they can more intelligently surface the type of content we might want to explore next.