The book contains: Concept of Evolution of Distributed computing: Scalable computing over the Internet ¿ Technologies for network based systems ¿ clusters of cooperative computers ¿ Grid computing Infrastructures ¿ cloud computing ¿ service oriented architecture ¿ Introduction to Grid Architecture and standards ¿ Elements of Grid ¿ Overview of Grid Architecture. Cloud deployment models: public, private, hybrid, community ¿ Categories of cloud computing: Everything as a service: Infrastructure, platform, software ¿ Pros and Cons of cloud computing ¿ Implementation levels of virtualization ¿ virtualization structure ¿ virtualization of CPU, Memory and I/O devices ¿ virtual clusters and Resource Management ¿ Virtualization for data center automation. Open source grid middle-ware packages ¿ Globus Toolkit (GT4) Architecture, Configuration ¿ Usage of Globus ¿ Main components and Programming model ¿ Introduction to Hadoop Framework ¿ Mapreduce, Input splitting, map and reduce functions, specifying input and output parameters, configuring and running a job ¿ Design of Hadoop file system, HDFS concepts, command line and java interface, data-flow of File read & File write.