This book takes a cross-disciplinary approach covering topics in business, computer Science, and Information systems. Mainly focusing on cloud computing models, techniques, and architectures, this book provides knowledge and hands-on experience in designing and implementing cloud-based software systems. Topics included are advanced web technologies (ajax and mashup), distributed computing models and technologies (Hadoop and MapReduce), Infrastructure-as-a-service (IaaS), software as a service (SaaS), platform-as-a-service (PaaS), virtualization, parallelization, security/privacy, and other issues in cloud computing.