How link building improve ranking ?

Hi there



How link building improve ranking in Google ? How the google process it.



Thanks

WE
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I think google's algorithm gives importance to pages/sites by the number of external links that point to the site homepage or the specific page. So by increasing the number of external links to your site you can influence google's ranking.
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more link means the site is more popular

thats the way google look at that
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think about a democratic election. a candidate who get the most vote wins the election. pretty much same concept with search engine ranking. with so many sites out there, a site which has most votes ranks the highest. votes in this case is endorsement from other sites in the form of backlinks. there are lot of other factors/variables that come into play, but as a general rule, more votes/backlinks you get, higher you rank.
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The logic here is easy to understand. If more and more people are linking to a given page, then there must be something special about that page. That is why link building is the most important aspect of Google rankings and therefore SEO.
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I read the Google book and it's all based on the same concept as research papers. If more citations are made to a source then it must be good. The two founders of Google were PhD students at Stanford.