RankBrain is a machine-learning artificial intelligence system that helps Google process some of its search results, in particular rare or one-of-a-kind queries. It was launched in early 2015 and is used globally by Google.
Google AdSense is a program in which enterprises can display Google advertisements on Web sites and earn revenue from hits that generate traffic for the Google search engines.
When I check for keyword rankings directly in Google or Bing, I find relatively high ratings. when my client checks at his location, he gets another ranking, much lower.
In SEO, white hat SEO refers to the usage of optimization strategies, techniques and tactics that focus on a human audience opposed to search engines and completely follows search engine rules and policies.