The History & Evolution of Web Search Engines 2020 January and May core algorithm updates 2019 Google confirms E-A-T is important part of algorithms BERT update 2018 Medic update 2017 Google Fred 2016 Google Possum 2015 Mobilegeddon Google renames parent company Alphabet, with Google as subsidiary RankBrain 2014 Google Pigeon HTTPS as Google ranking signal 2013 Google Hummingbird 2012 Google Peng