September 27, 2011
How Does Google Work?
We all know that typing a query into Google normally produces countless pages of results, with 10 carefully ranked suggestions on each page. But how does Google do this and what is involved in deciding which websites are most relevant to your search?
When you type your search term into Google and hit enter, you set off a complex but incredibly quick process involving a series of simultaneous calculations and decisions. Despite over 200 factors being taken into account in deciding which websites are most relevant to your search, it takes under a second to bring you your results. It is often stated that millions of results have been returned, but normally fewer than a thousand are actually displayed.
These results have been sorted based on the authority they hold and Google’s patented PageRank algorithm, with duplicate pages being removed from the results. Several filters are also applied. If Google considers current news, videos, shopping or maps results to be suitable for your search, these may be mixed in. Similarly, if a particular search query is experiencing a boom in search volume or is the subject of recent news, Google may place greater importance on fresh results. The previous websites you have visited are considered, as is the extent to which results are linked with other high ranking websites. Google AdWords adverts are then included above and to the right of the page, having been automatically bid for by advertisers.
And this gives you your final search results!
Or, as Google puts it, “by combining overall importance and query-specific relevance, we’re able to put the most relevant and reliable results first.”
So these factors of relevancy and authority are the key elements to boost in a successful search engine optimisation campaign if you want your website to get to the top of Google.