Google launched the Penguin Update as a new effort to reward high-quality websites and, on the other hand, diminish the search engine results page (SERP) presence of websites.
Google Pigeon’s release leads to one of the greatest shakeups of Google’s local and local organic results to date.
Released in 2013, Google Payday Update was an algorithm that targeted queries and sites which are supposed to be spammy.
Google release Pirate Update in August 2012 to stem the accusation that it doesn’t do enough to fight piracy. This system penalized sites that are supposed to violate copyright laws.
Google’s EMD algorithm update focused on ridding the SERPs of low-quality exact match domains.EMD was a 2012 Google Algorithm Update
Google Top Heavy update is a new Policy that targets websites overloaded with AdSense ads uploaded with very little content at the end of the ads.