In this video we will see details about how search engines crawl, index and rank WebPages.
There are many search engines in the World. Search Engines like Google, Bing, Yahoo, DuckDuckGo and many other are available on the internet to provide information on any topic.
When you have a query, you just need to type in the search bar of most popular search engine and get its answer in no time.
• So, what’s actually happening behind the bar?
• How do search engines actually work?
• How they decide to show which result will be shown and where?
This video explain all of this and explain how things work at search engines.
*So What are Search Engines?*
A search engine is the platform that facilitates users to discover data from the World Wide Web. Every search engine is different from other because of its distinct index and bot which positions website and informative pages in their own specific way.
Till date Google is the top most popular search engine available.
*Why Google is on top?*
There are many reasons to its attraction, its homepage is quite simple with no ads popping on it in contrast to its opponents like Yahoo and Msn. It is user friendly, loads in fractions of seconds and makes available better results than rest of the search engines. These are the reasons that it receives over 5.6 billion searches in a single day. Pretty enough to stand alone at the top!
*How Google Works?*
Google has created software programs known as spiders or crawlers. Spiders start by finding a few web pages and follow the links on those pages and fetch the pages they point too and follow the links on those pages and so on, until they index a pretty big chunk of the web having billions of pages. All those pages are then stored across thousands of machines.
Now suppose you want to find out height of Minar e Pakistan. You write the following query in Google “What is the height of Minar e Pakistan?” and hit enter. After that Google software searches the index to find out all those pages that includes the search terms i.e. Minar e Pakistan and height. And in this case there could be hundreds of thousands of results. So how Google decides which few documents are actually the most relevant to searcher intent? Google does it all by considering many factors which are approx. 200 in numbers.
For example;
• how many times does this page contains your keywords?
• Do the keywords appear in the title?
• In the URL?
• Directly adjacent? Does the page include synonyms of those words?
• Is the page is from a quality website or from a low quality or spammy?
• What is the page authority of that particular page?
• How many outside links are pointed to it and how much credible those links are?
Finally, Google combine all those factors together to decide each page overall score and send back the search results. And all this happens in less than half a second. And in this case you will get the search result that height of Minar e Pakistan is 70 meter.
Happy Searching :)
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