The Google algorithm is Google’s formula for calculating the relevance of a website with respect to search queries by search engine users.
Apart from the PageRank system, 200 additional criteria are included in the algorithm to list websites in order of their importance. These criteria are regularly amended to ensure a high relevance of the results and to thwart any attempts to outsmart the system.
Over the years, Google has already changed and renamed its algorithms several times. The last updates were called Panda, Penguin and Hummingbird and each of these received various version updates. The big changes contained in the Hummingbird algorithm with its context-based classification benefited some websites, while other sites with weak content crashed spectacularly.Glossary index