Brief description of google algorithm

Google's algorithm is the complex set of rules and processes that the company uses to determine the relevance and authority of a website and its pages and to decide which pages should be displayed at the top of search engine results for a given query. Google frequently updates its algorithm to improve the quality of search results, to combat spam and fraud, and to adapt to new technologies and user behaviors.
Here is a chronological list of some of the major algorithm updates that Google has made over the years:
Boston: Launched in 2003, this update improved the way Google handled synonyms, to better understand the intent of a search query.

Cassandra: Launched in 2004, this update aimed to combat link spam and improve the relevance of search results.

Jagger: Launched in 2005-2006, this update targeted link schemes and was designed to improve the relevance of search results.

Big Daddy: Launched in 2006, this update improved the way Google handled redirects and URLs with session IDs.

Vince: Launched in 2009, this update aimed to give visibility to big brands in search results.

Caffeine: Launched in 2010, this update improved the speed and accuracy of Google's indexing process, allowing for near-real-time search results.

Panda: Launched in 2011, this update targeted low-quality content and was designed to reward websites with high-quality, informative content.

Penguin: Launched in 2012, this update targeted spammy backlinks and was designed to penalize websites that used manipulative link-building tactics.

Hummingbird: Launched in 2013, this update was focused on understanding the intent of a search query and providing more accurate results.

Pigeon: Launched in 2014, this update aimed to improve the local search results, by improving the distance and location ranking parameters.

Mobilegeddon: Launched in 2015, this update was designed to boost mobile-friendly websites in search results.

RankBrain: Launched in 2015, this update used machine learning algorithms to understand the intent of a search query and provide more accurate results.

Possum: Launched in 2016, this update aimed to improve the local search results, by giving visibility to businesses located outside of city limits.

Fred: Launched in 2017, this update targeted websites that have low-quality content and engage in black-hat SEO techniques.

Medic: Launched in 2018, this update aimed to improve the quality of the search results in the medical and health niches.

Core Updates: Launched in 2019-2021, Google has been making core updates every few months, and they are focused on improving the overall quality of the search results.
These are just a few examples of the many algorithm updates that Google has made over the years. It is important for SEO professionals and website owners to stay informed about these updates and make the necessary adjustments to their SEO strategies to ensure that their websites continue to perform well in search engine results.