Search has changed over the years to meet the evolving needs and expectations of the people who use Google. From innovations like the Knowledge Graph, to updates to our systems that ensure we’re continuing to highlight relevant content, our goal is always to improve the usefulness of your results.
We put all possible changes to Search through a rigorous evaluation process to analyze metrics and decide whether to implement a proposed change.
Data from these evaluations and experiments go through a thorough review by experienced engineers and search analysts, as well as other legal and privacy experts, who then determine if the change is approved to launch. In 2020, we ran over 600,000 experiments that resulted in more than 4,500 improvements to Search.