Algorithm Change

Algorithm change is a change to the way a search engine ranks websites. These changes can be small and insignificant, or they can be major game-changers that have a significant impact on search results.

Algorithm changes usually come in three forms: updates, refreshes, and new algorithms. An update is a change to an existing algorithm, a refresh is a re-run of an existing algorithm using the same signals as last time, and a new algorithm is a brand new algorithm that improves search quality in some way.