History And Evolution of SEO

SEO - History And Evolution

Search engine optimization is the process of getting traffic from the natural search results on search engines. Google was founded by Larry Page and Sergey Brin while they were college students. Google mainly uses three steps for optimizing web pages named crawling,caching and indexing.scanning of web pages for relevant search is called crawling. After crawling google bot takes a snapshot of scanned web pages and will be save to google's database  is called caching. The production of result according to  search  is called indexing. First time google was niche specific that means,the importance given to content of the web page. In that situation web masters practiced keyword stuffing(loading web pages with keywords) to manipulate site's ranking in search results. Keyword stuffing is one of the  black hat SEO techniques. 

Black hat SEO

Black hat SEO refers to unethical practice for ranking the websites. In this strategy webmasters focuses only on ranking, and does not try to maintain the quality of web pages. Google changed content specific ranking strategy to link specific due to lots of un ethical activity. Web sites having highest number of links from another websites became ranked first. Link specific again changed to quality link specific.

Passing the juice: Websites having highest page rank(ranking of website by google according to quality of web pages) start to sell links to another websites. Those websites who sells the links got reduced their ranking.Links can send without losing equity by using the attribute "no follow".

Bounce rate: The percentage of users visiting only one page of the website.

Social media signal: Ranking of website on the basis of overall social media activities.

                                      Major Updates By Google

1. Google Panda(2011): Google panda was launched in 2011. This update is  against content spamming such as content duplication,content spinning, thinny pages and using contents having less quality.

• Content duplication: Copying content from another web sites.
• Content spinning: Repeating same sentences in different pages.
• Thinny pages: Web page having less contents.

Panda 4.0(2014):  Websites having content  duplication has been removed from results. This update is a search filter used to stop websites having content duplication.

2. Penguin update(2012): Update against link spamming. After the release of penguin update, sites that have take action to remove bad links. Sites that are not previously caught get trapped after penguin update. Link spamming contains:

• Link exchange: Exchanging links from different websites.
• Link farming: Producing links by using programs.
• Comment farming: Adding links in comment boxes.
• Wiki spamming: Taking links from Wikipedia.
• Using less quality links from directory

3. Pigeon update (2014): Update related to local SEO. It provides optimization for locally visible products or business. It provides more accurate and relevant search results more closely to search engines. The new change in the algorithm helps to improve their location ranking during search.

4. Hummingbird update(2013): Hummingbird update brings semantic search results. Through this update, system can sort all the information about the searched keyword and brings accurate results for users.

5. Rank Brain update(2015): Advanced version of hummingbird. Search results are obtained using AI machines.

6. Parked domain update(2012): Update against parked domain(website having no data).

7. Exact Match update(2012): Google removed websites having address same as focusing keyword and less quality ranking.

8. Pirate update: Update against duplication of multimedia files.

9. Mobile Giddon update(2015): Google made a mobile friendly update states that text in the website must be readable without zooming or double tap.

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