The article begins by pointing out that every request to a search engine requires complex computations. When Google gets a request, it reads hundreds of megabytes of data and uses tens of billions of CPU cycles. With thousands of such requests happening every second, Google's infrastructure compares in size to a supercomputer installation!Energy efficiency and price performance ratio are the most important factors to its design. Easy parallelism is the main priority so that different queries can run on different processors the overall index is partitioned so that a single query can use multiple processors. Google's architecture provides reliability by…… Google Inc. : Why is it the best place to work / Google's Secret to success?Google was formed in 1998 by Larry Page and Sergey Brin in America.