Google algorithm update history?
What are Google Algorithms?

Google’s algorithms are a complex system used to retrieve data from its search index and immediately provide the best possible results for a query. A search engine uses a combination of algorithms and numerous ranking factors to provide web pages ranked by relevance on its search engine results pages (SERPs).

In its early years, Google only made a few updates to its algorithms. Now, Google makes thousands of changes every year.

Most of these updates are so minor that they go completely unnoticed. However, occasionally a search engine makes significant algorithm updates that significantly affect SERPs, such as:

#Page Layout Algorithm
#Venice update
#EMD (Exact Match Domain)
#Quality update

Updating useful content
Google announced the launch of the useful content update that started on August 25th. Content creators can learn more about creating content for people first on the Search Central blog.

July 27, 2022
July 2022 product review update
Google announced the release of the July 2022 Product Reviews Update on July 27th, which was completed on August 2nd.

May 22, 2022
Core update from May 2022
Google announced via Twitter the release of a major core update called the May 2022 Core Update.
Updating the site experience

December 1, 2021
December 2021 product review update
Google announced via the Google Search Central Twitter account that the December 2021 Product Review Update started for English-language sites today and is estimated to take three weeks to complete.

November 30, 2021
November 2021 local search update
Google announced via Twitter the November 2021 local search update, which started on November 30th and was completed on December 8th.

November 17, 2021
A broad base update
Google Search Central announced via Twitter that a broad core update would be released later that day. They referred webmasters to their documentation on what site owners need to know about core updates, last updated in August 2019.

November 3, 2021
Google spam update
According to a tweet from Google Search Liasion, the spam update was launched from November 3-11, 2021 as part of their regular work to improve search results. In their announcement, they suggested that webmasters continue to follow the webmaster guidelines.

July 26, 2021
Google Link spam algorithm update
Google has announced that an algorithm update aimed at identifying and eliminating link spam is starting to arrive. Google has warned that any sites that engage in link spam tactics may experience ranking changes – most likely to affect sponsored, hosted and affiliate content. Google said the update should be fully rolled out in “at least” two weeks and will affect several languages.

July 12, 2021
July 2021 core update complete
Google Search Liaison confirmed via Twitter that the rollout of the July 2021 Core Update was effectively completed on July 12. No further details were provided.

July 1, 2021
Core update from July 2021
Google Search Liaison announced via Twitter that the July 2021 Core Update is being released and will take one to two weeks to complete. Google’s instructions on basic updates can be found on the Google Search Center blog.

June 28, 2021
Spam Update Part 2
Google Search Liaison announced via Twitter that the second part of their spam update started on June 28th and will likely be completed on the same day. The original announcement referenced a Google Search Central Blog post, updated in April 2021, about how Google was fighting search spam in 2020.

June 23, 2021
June 2021 Spam Update
Google’s Danny Sullivan announced via Twitter an anti-spam algorithm update being rolled out to search results. The rollout of the update was supposed to be completed on the same day. He added that a second spam update would follow within a week. Google didn’t reveal any specific details about what the update was targeting.

June 15, 2021
Updating the site experience
Google confirms that its long-awaited Page Experience update has started rolling out. Sites shouldn’t expect drastic changes as a result of this update, Google says, and any sudden dips or spikes should be mitigated by a gradual rollout process.
Protection of known victims
June 10 Pandu Nayak,
A Google Fellow and VP of Search published a post on The Keyword blog. In it, he discussed Google’s work to improve its algorithm to downgrade sites that “use exploitative removal practices” and “predatory practices.” He also shared a link that people can use to report online harassment.

June 2, 2021
A broad update to the core algorithm
Google Search Liaison Danny Sullivan announced via Twitter that a major update to the core algorithm is about to be released.
Product rating update