Google Entity Stacking is actually a search engine optimization approach that attaches relied on Google properties

https://wiki-tonic.win/index.php/Google_Entity_Stacking:_Just_How_to_Boost_a_Stronger_SEO_Stack_with_Google_Resources

Google Entity Stacking is a SEO method that links trusted Google residential properties and similar facilities to reinforce topical relevance, boost authority indicators, and assist better search visibility.