A plain-language explanation
RankBrain is a component of Google’s ranking systems that uses machine learning to better understand queries and match results.
Where it helps in practice
RankBrain helps search systems interpret queries and is not a single switch that a page can be “optimised for”.
The decision before implementation
Answer intent clearly and verify that the page solves the user problem instead of writing for the algorithm name.
How to verify the result
Review query groups, post-click satisfaction and content relevance without inferring too much from one ranking movement.
