Cloud computing incorporates virtualization, data and application on-demand deployment, Internet delivery of services and open source software to provide significant business benefits. Through virtualization, cloud computing enables a dynamic data center where servers provide resources that are utilized on an as-needed basis. As demand changes, resources scale dynamically in order to meet the growing or shrinking workload. Applications in the cloud can replace traditional IT services, such as file serving, messaging, CRM, storage and more.

The benefits of deploying applications using cloud computing include reducing run time and response time, minimizing the purchasing and deployment of physical infrastructure. Considerations for energy efficiency, flexibility, simplified systems administration, pricing based on consumption, and limiting the footprint of the data center make the case for cloud computing even more powerful.

Pay-by-use cloud computing

For smaller organizations in particular, where restricted budget, floors pace constraints and less specialized IT staff are common, pay-by-use, or public, cloud computing yields significant business advantages. Layered service providers offering cloud computing solutions can be adjacent to company's equipment leases. Public clouds are run by third-party service providers and applications from different customers are likely to be mixed together on the cloud's servers, storage systems and networks.

" IT services as a line-item expense
" Always-current software licensing
" Automated software and security updates
" Robust, automated disaster recovery policies
" Reduced technology asset management issues
" Less hardware to dispose of/recycle
" Eliminates depreciable expenses
" Add/reduce capacity and capabilities as needed

Private and hybrid cloud computing

Cloud computing can be provided using an enterprise data center's own servers. Private clouds are built for the exclusive use of one client, providing the utmost control over data, security and quality of service. Private clouds can also be built and managed by a company's own IT administrator. The combination of virtual machines and virtual appliances used for server deployment objects is one of the key features of cloud computing. Additionally, companies can merge a storage cloud that provides a virtualized storage platform and is managed through an API, or web-based interfaces for file management and application data deployments.Hybrid clouds combine both public and private cloud models, which may be used to handle planned workload spikes or storage cloud configurations. Dedicated audits for security policies are a must.

" Greater data security and control
" Manage quality of service
" Leverage existing infrastructure and staff
" Allows use of hybrid cloud services to augment private cloud capabilities.

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