Cloud Computing
History of computing system 1. Mainframe <--> Terminal (no harddisk / OS) 2. Server <--> Switch <--> Clients 3. Cloud <--> Thin Client(Monitor) Famous Cloud Provider: Amazon, Google, Microsoft Service provided by Cloud Provider: computing, storage, software... Definition 1. a paralleled and distributed computer system consisting of interconnected and virtuallised computers that are dynamically provisioned and presented as one or more unified computing resource based on Service Level Agreement(SLA) between service provider and consumers. Description: distributed computer->can share between computer, co-operation together. 2. Data center hardware and software that provide service to users. 3. By NIST(National Institute of Standard and Technology). Cloud computer is a pay-per-use model. For convenient, on-demanded network access to a shared pool of computing resource(eg. network, servers, storage, application, services) that can be...