Cloud computing is simply a buzzword used to repackage grid computing and utility computing, both of which have existed for decades.”whatis.comdefinition of Cloud Computing
“The interesting thing about cloud computing is that we’ve redefined cloud computing to include everything that we already do. […] The computer industry is the only industry that is more fashion-driven than women’s fashion. Maybe I’m an idiot, but I have no idea what anyone is talking about. What is it? It’s complete gibberish. It’s insane. When is this idiocy going to stop?Larry Ellisonduring Oracle’s Analyst Day
Cloud Computing: Cloud computing is a style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet. Users need not have knowledge of, expertise in, or control over the technology infrastructure in the "cloud" that supports them.[ The act of joining multiple computer together to work on a complex problem with the intent to find a solution much faster (grid).
5th Generation Of Computing 1970s 1980s 1990s Today 2009+ Client-Server Web SOA Services Monolithic
Cloud Ecosystem Public Cloud Virtual Private Cloud External Internal Private Cloud Private Cloud Enterprise
Cloud Benefits • Cloud = Less Investment (not own data center, hardware; use outside provider of servers, storage, and bandwidth) • Cloud = Scale (tens of thousands of server computers) • Cloud = Flexible and Efficiency
Utility Computing Platform as a Service (PaaS) Cloud-based User Applications