Whats Happening Behind Google Search?

Almost every one will  use GOOGLE SEARCH ENGINE to surf the web. not only from PC they use this feature in a wide range of gadgets such as mobiles,tablets etc.

A question should definitely arise in us : “HOW DOES GOOGLE MANAGE TO RESPOND TO EVERY QUERY IN LESS THAN A SECOND”

On an average google responds to 5-6 billion queries per day !! [...]

A small example :

Google has produced about 12.93 billion results in almost 0.26 seconds!!!

                   Let us hear the answer from Matt Cutts (an engineer at google)

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