WHAT IS CLOUD ??Infrastructure provided by the serviceprovider to build internet application.The service provided by cloud arecategorize > Software As a Service > Infrastructure As a Service > Platform As a Service > Database As a Service > Software plus Service
Cloud Computing- CONCEPT Cloud computing refers to the use and access of multiple server-based computational resources via a digital network (WAN), Internet connection using the World Wide Web etc.. Cloud users may access the server resources using a computer, netbook, pad computer, smart phone, or other device. In cloud computing, applications are provided and managed by the cloud server and data is also stored remotely in the cloud configuration. Users do not download and install applications on their own device or computer; all processing and storage is maintained by the cloud server. The on-line services may be offered from a cloud provider or by a private organization.
HISTORYCloud computing is a natural evolution of the widespread adoption of virtualization, service-oriented architecture, autonomic, and utility computing. Details are abstracted from end-users, who no longer have need for expertise in, or control over, the technology infrastructure "in the cloud" that supports them.The actual term "cloud" borrows from telephony in that telecommunications companies, who until the 1990s offered primarily dedicated point-to-point data circuits, began offering Virtual Private Network (VPN) services with comparable quality of service but at a much lower cost.
NEEDSTo reduce the IT operations and management costsCloud model of software architecture.
ISSUES RELATED TO CLOUD COMPUTINGCloud computing may create a dependence on the provider (Google, Amazon) and may make it difficult to move to another platform.Google itself admits that Google App Engine is targeted at consumer applications, not businesses.There’s always the risk that the Cloud provider may change business models or even go out of business.
TYPES OF CLOUDPublic CloudPrivate CloudCommunity CloudHybrid CloudCombined Cloud
PROS AND CONS :ADVANTAGES:Software as a SubscriptionReduced Software MaintenanceIncreased ReliabilityEnvironmentally FriendlyCost ReductionPortability/Accessibility
DISADVANTAGES:Bandwidth could bust your budgetApp performance could sufferData might not be cloud-worthyToo big to scale
Future of CLOUD COMPUTING The 55% of respondents believe that cloud computing has a lower total cost of ownership (TCO). 74 percent of respondents indicated that cloud computing would either lead to an increase in hiring or have no impact, while rest of respondents expected any decrease in hiring based on cloud adoption. 39 percent indicating that the cloud would make for less or more complex environments.
Conclusions•Cloud Computing is the fastest growing part ofIT• Tremendous benefits to customers of all sizes• Cloud services are simpler to acquire and scaleup or down
Conclusions•Public clouds work great for some but not allapplications• Private clouds offer many benefits for internalapplications• Public and private clouds can be used incombination