TheCloudTutorial has tutorials on Hadoop, force.com development platform, Virtualization, Multitenancy, Cloud Computing and SOA,Cloud Computing Types and technologies related to Cloud computing. The site has interviews with leaders of cloud computing vendors - Marc Benioff (Salesforce), Rick Jackson (VMWare) and Raju Vegesna (Zoho invoicing software) and with authors George Reese, Michael Miller, Tim Mather and Toby Volte. Also included is analysis of cloud computing vendors, free cloud computing applications, online storage space providers.
Cloud Computing makes computer infrastructure and services available "on-need" basis. The computing infrastructure could include hard disk, development platform, database, computing power or complete software applications. To access these resources from the cloud vendors, organizations do not need to make any large scale capital expenditures. Organization need to "pay per use" i.e. organization need to pay only as much for the computing infrastructure as they use. The billing model of cloud computing is similar to the electricity payment that we do on the basis of usage. In the description below vendor is used for cloud computing service provide and organization is used for user of cloud computing services.
Cloud Computing has the following characteristics:
Cloud computing provides a level-playing field for smaller organizations. It allows smaller organization access to computing infrastructure without making any significant initial investment.
Many experts believe that cloud computing will lead to increased commoditization of computing resources.
Origin of termCloud traditionally depicts the internet. Since cloud computing is built using internet, hence the name.
Examples of Cloud Computing applicationsHotmail.com was launched in 1996, It is widely considered as the first cloud computing application. The data is stored at the vendor servers, and users could pay incrementally to increase disk space usage. Many other services have emerged in the last decade that allows users to store information (or perform processing) without paying any upfront charges. These are typically consumer oriented services. Twitter, myspace, Wikipedia, youtube, facebook, linkedin, Google docs and blogger all have the characteristics explained above and are examples of cloud computing. Companies that provide Hosting services for diskspace storage, images, emails are all examples of cloud computing
Salesforce.com, founded in 1999, was the first successful example of providing software as a service in the business to business domain. Salesforce is a CRM tool for sales executives providing features like managing customer details, running promotions etc.
Amazon.com was one of the first vendors to provide storage space and computing resources following the cloud computing model.