GoogleSystemConfirmed
Subtopics ranking
Neural system that identifies subtopics within a broad query so results cover a wider range of angles.
What changed
Google announced a system that recognises subtopics inside broad queries — for example different equipment types within a general hobby query — and diversifies results to cover them. It went live in November 2020 and is listed among Google's ranking systems. Only the month of launch is documented, so the start date is set to the first of the month.
Timing
Announced on 15 October 2020, with rollout beginning 1 November 2020. No completion date was announced. Rankings typically remain unstable for the whole rollout window, so measurements taken inside it are not a reliable read on the outcome.