The Next Logical Step in Business Computing
Cloud computing, often referred to as simply “the cloud,” is the delivery of on-demand computing resources—everything from applications to data centers—over the Internet on a pay-for-use basis. Today’s organizations are under continuing pressure to do more with less. They want solutions that are resilient, reliable and drive competitive advantage. And at the same time, they want simpler, cost-effective and easy to deploy solutions. Cloud computing solutions are answering these needs by fundamentally transforming how organizations staff, manage and deliver IT services.
Commonly Used Cloud Services
The cloud is about providing services—Software as a Service (SaaS), Platform as a Service (PaaS), or Infrastructure as a Service (IaaS). Another way to look at it: The cloud is about providing a pool of computing resources that all operate together, effectively as a single computer.
The cloud has been called the next logical step in enterprise computing. No longer as much about managing infrastructure, enterprise computing is now more about managing information. It’s about having your storage, your application development environment, your applications and your security available to you when you need them—all from an information technology grid.
Cloud Computing Deployment Models
There are basically three cloud models; known as Public, Private and Hybrid. All three are different based on where the ultimate authority of computing operations lies. Below are the main features of each of the three cloud models and their respective differences.
- Public Cloud
Public clouds are owned and operated by companies that use them to offer rapid access to affordable computing resources to other organizations or individuals. With public cloud services, users don’t need to purchase hardware, software or supporting infrastructure, which is owned and managed by providers.
- Private Cloud
A private cloud is owned and operated by a single company that controls the way virtualized resources and automated services are customized and used by various lines of business and constituent groups. Private clouds exist to take advantage of many of cloud’s efficiencies, while providing more control of resources.
- Hybrid Cloud
Hybrid cloud, as the name suggests, combines the features of both types of cloud systems described above. Companies that seek to capitalize on the benefits of both types cloud offerings prefer hybrid cloud. Typically, in a Hybrid cloud environment, companies store their vulnerable and important data on the private cloud, and less risky applications on the public cloud platform.