Understanding the Search Engines – Part One

Here at Wida Search we are going to start from the beginning and give you a guide to how SEO works so you can implement your own site to get it ranking better on Google and other search engines. Today we are starting with looking at how search engines work.


How Search Engines Work

Search Engines like Google have four key roles crawling, building an index, calculating relevancy and rankings and providing results for the user.

The way search engines crawl a website is via links so it will collect each web page, PDF, JPG or any other file type. Through links the search engine robots can reach billions of interconnected documents.

Once the engines find a page it will glance at the code on the page and store parts of the page to its hard drive ready for it to be recalled for a search query. There are many data centres around the world storing this data ready to give a search query its most relevant data.


Providing Results

When a user is on a search engine and searches for something online the search engine has two jobs to do, first return all the relevant pages to that search from its hard drive and secondly rank the results in order of importance.

At the moment major search engines typically show importance by popularity, the more popular the site, page or image the more important this must be.

Popularity and relevance are not determined manually, the engines have mathematical algorithms to sort out the good from the bad and then rank then in accordance. These algorithms have hundreds of ranking factors to consider in ranking a website number one or on page 10.


Search Engines

They are two main search engines which are Google and Bing as Yahoo does no longer get the traffic it once had. Google is considered the dominant search engine because of the user interaction it gets compared to Bing, However these two search engines have different ranking factors to each other which results in different results for the user.



This hopefully has given you some knowledge how search engines work and how it collect data and gives this data to the end user.

Hope you are looking forward to Part Two of SEO.

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