I have been speaking on Cloud Computing at various forums for last 6 years now. I realized that even with so much hype around the words "Cloud Computing", still many people are not aware of the actual meaning and purpose of Cloud Computing. Its true that Cloud computing is breathing new life into IT and IT services and its going to stay. In this book, I have shared the basics of cloud computing with an aim that anybody who reads this book will be ready to dive into the big ocean of cloud computing. This book is a result of my experience of working in this field.