Google has been updated its algorithms time to time, to improve search engine results. That also affected and continuously search engine rankings of many websites. These are too many that anyone can hardly get them remember. So, to recall these algorithms at one place here I am providing some basic information about 9 major Google algorithms. :
Released Date: Feb 2011.
Effect: Lower the rank of low quality sites or we can say thin or duplicate sites. Improve the ranking of higher quality sites. Almost 12% SERP results affected by this algorithm.
Check your site content for plagiarism
Avoid Keyword Stuffing
Improve website’s user experience
Updates Till Now: Last Panda Update was Panda 4.2 on July 18,2015. It was 30thpanda update of Google.
Released Date: April 2012.
Effect: Aimed at lower the search engine rankings of the website that doesn’t follow google’s webmaster guideline by using black-hat seo techniques like unnatural link building, keyword spamming, doorway pages, etc.
Monitor Link Profile Growth
Check for penalty risks in webmaster
Get rid of harmful links through Google’s Disavow tool.
Updates Till Now: Last Penguin update was Penguin 4.0 on Sep. 23, 2016. The major problem with Penguin is that you will not notify ever if your website will be hit by this. So, you have to check your site’s back links time to time.
Released Date: August 22,2013
Effect: It is complete new algorithm that helps Google to better interpret search queries and providing search results that match search intent. The use of synonym also has been optimized with Hummingbird.
Expand your keyword search with related search, synonyms, and co-occurring terms instead of using short-tail terms.
Identify the language your audience use to search similar keywords
Avoid exact-match, think concepts.
Google Pirate Update:
Released Date: Oct. 21,2014
Effects: Aimed at illegal torrent sites and other sites with large amounts of pirated content.
Safety Checks: Don’t distribute anyone’s content without the copyright owner’s permission. 🙂
Google Pigeon Update:
Released Date: Jul. 24,2014
Effects: Altered the results Google returns for queries in which the searcher’s location plays a part. According to Google, Pigeon created closer ties between the local algorithm and the core algorithm, meaning that the same SEO factors are now being used to rank local and non-local Google results. This update also uses location and distance as a key factor in ranking the results.
Optimize your pages properly.
Set up a Google My Business page
Make sure your NAP is consistent across your local listings.
Get featured in relevant local directories.
Released Date: Apr. 21,2015
Effects: According to this update, mobile-friendly pages rank at the top of mobile search, while pages not optimized according to mobile are filtered out from the SERPs or down ranked.
Go mobile and focus on speed and usability
Take help from Google’s mobile-friendly test.
Optimized your site accordingly.
Google’s Rankbrain Update
Released Date: Oct. 26,2015
Effects: Rankbrain is a part of Hummingbird’s update. It is a machine learning system that helps Google to understand search queries meaning and provide best matching search results in response to those queries. It is also an important ranking factor in Google.
Maximize User Experience
Do Competition Research properly
Released Date: Sep. 1,2016
Effects: Ensured that local results vary more depending on the searcher’s location. The closer a user to business’s address, the more chances user will show in local search results.
Do geo-specific rank tracking
Expand your list of local keywords
Released Date: Mar. 8, 2017
Effects: Targets sites that violate Google’s webmaster guidelines. Most effected sites are content sites with low quality articles.
Review Google’s guidelines
Watch out for thin content
Tried to list down important updates into one place. Hope that will help you to know in short and easy way. If I missed any please let me know. Comments are welcomed.