What is cloud computing and how can an organization decide whether to adopt it?
Cloud computing poses a variety of challenges to conventional advanced ICT, mostly due to the fact of the unprecedented scale and heterogeneity of the required infrastructure.
Types Of Clouds:
There are different types of clouds that you can subscribe to depending on your needs. As a home user or small business owner, you will most likely use public cloud services.
- Public Cloud - A public cloud can be accessed by any subscriber with an internet connection and access to the cloud space.
- Private Cloud - A private cloud is established for a specific group or organization and limits access to just that group.
- Community Cloud - A community cloud is shared among two or more organizations that have similar cloud requirements.
- Hybrid Cloud - A hybrid cloud is essentially a combination of at least two clouds, where the clouds included are a mixture of public, private, or community.
- Infrastructure as a Service (IaaS): An IaaS agreement, as the name states, deals primarily with computational infrastructure. In an IaaS agreement, the subscriber completely outsources the storage and resources, such as hardware and software, that they need. Examples: Amazon S3, SQL Azure.
- Platform as a Service (PaaS): A PaaS system goes a level above the Software as a Service setup. A PaaS provider gives subscribers access to the components that they require to develop and operate applications over the internet. Examples: Force.com, Google App Engine, Windows Azure.
- Software as a Service (SaaS): A SaaS provider gives subscribers access to both resources and applications. SaaS makes it unnecessary for you to have a physical copy of software to install on your devices. SaaS also makes it easier to have the same software on all of your devices at once by accessing it on the cloud. In a SaaS agreement, you have the least control over the cloud. Examples: Google Docs, Salesforce CRM, SAP Business by Design.
- The cloud provides many options for the everyday computer user as well as large and small businesses.
- It opens up the world of computing to a broader range of uses and increases the ease of use by giving access through any internet connection.
- An organization needs to weigh the cost, benefits, and risks of cloud computing in determining whether to adopt it as an IT Strategy.
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