How does SEO work

Introduction to Search Engine Optimization (SEO)

First, let’s have a look at what Search Engines do:

  • Google is the market leader in search engines
  • Bing and Yahoo are most popular in the United States
  • Yandex is more popular in Russian
  •  Baidu has more than 50% market share in China
  • Duckduckgo and Startpage is more privacy-oriented pages

Search Engines consists of three parts:

  1. Crawler or bot
  2. Index
  3. Algorithm

The process begin with the crawler that travels the web through links. The crawler looks for data (content/links) that explains what websites are about and how it is structured. This happens 24/7. The crawler saves the HTML version of the website on an enormous database namely the index. The index is updated every time the crawler revisits your site. Google revisits your site according to how often you update your page. 

This translates to ranking. Search Engines use an algorithm to take the data of the index to predict whether or not used for the search engine. It uses this calculation to decide which page the site will be displayed. 

The most important elements algorithm takes into consideration is:

  1. Quality content
  2. Site speed
  3. Security of site

How do you get your website indexed?

Crawlers need to have a link from another website that they can use to land on your website, without it they won’t know your site exists. Crawlers use all of the links on the net to crawl sites. Internal and external links have a tremendous effect on search engines.



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