In this eye-opening look at the new computer revolution and its consequences, Nicholas Carr explains why computing is changing and what this means for all of us. A hundred years ago, companies stopped producing their own power and plugged into the newly built electric grid. The cheap power pumped out by electricity providers not only changed how businesses operated but also brought the modern world into existence. Today a similar revolution is under way as companies dismantle their private computer systems and tap into rich services delivered over the Internet. Computing is turning into a utility. The shift is remaking the computer industry, bringing competitors like Google to the fore and threatening traditional stalwarts like Microsoft. The effects will reach further as cheap computing changes society as profoundly as cheap electricity did. In this lucid and compelling book Carr weaves together history, economics and technology to explain the "big switch".