A book on the Cloud

I read a book on the web war,'Apple,Google and Microsoft,which will take over the Cloud?'
It's really thrilling and I feel very curious how the big three companies are going on.
The writer says that the new round of the Cloud era in a few years will tell the one.
Actually I'm using Windows xp, Ipad and Iphone of Apple, blogger on Google.
All of them are my good company. I love to follow them and use it for my cloud.