Cloud Computing technology is the most popular now a day because of it flexibility and mobility support. Cloud Computing allows the access to personal and shared resources with minimal management. It often Relies on the internet. There is also third-party cloud solution available which saves expanding resources and maintenance. Most appropriate example of cloud computing is Amazon Elastic Cloud Compute (EC2), highly capable, low cost, and flexible.
Cloud computing is an on-demand delivery of IT capabilities where IT infrastructure and applications are provided to subscribers as a metered service over a network.
Characteristics of Cloud Computing
- On-demand self-service
- Distribute storage
- Rapid elasticity
- Automated management
- Broad network access
- Resource pooling
- Measured service
- Virtualization technology
Types of Cloud Computing Services
Provides virtual machines and other abstracted hardware and operating systems which may be controlled through a service API.
Iaas also known as Cloud infrastructure service is basically a self-service model. Iaas is used for accessing, monitoring and managing purpose.
For example , instead of purchasing additional hardware such as Firewall, networking devices, server and spending money on deployment, management, and maintainance, IaaS model offers Cloud-Based infrastructure to deploy remote data center.
E.g Amazon EC2, Go grid, Sungrid, Windows SkyDrive, etc.
Offers Development tools, configuration management, and deployment platforms on-demand that can be used by subscribers to develop custom applications.
It allows to develop, run and manage applications. Paas Offers Development tools configuration management, Deployment Platforms and migrate the app to hybrid models. It basically helps to develop and customize applications manage OSes, visualization, storage and networking, etc.
E.g Intel MashMaker, Google App Engine, Force.com, Microsoft Azure, etc.
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Offers software to subscibers on-demand over the Internet.
SaaS is the most popular type of Cloud Computing service that is most widely used. on-demand Service centrally hosted to be accessible by users using client via browsers.
E.g Web-based office applications like Google Docs of Calendar, Salesforce CRM, etc.