CDN: Content delivery network – A system of computers that contain copies of data, located in different places on the network whereby clients can access the copy closest to them
Cloud: A metaphor for a global network, commonly used to represent the Internet
Cloud storage: Service where customers can save their data virtually, maintained by a third party
Cloudsourcing: Switching from traditional IT services to cloud services
Cloudstorming: Connecting multiple cloud computing environments.
Cloudware: Software that enables creating, deploying, running, or managing applications in the cloud.
Cloud Application: The “top” layer of the Cloud Pyramid where “applications” are run and interacted with via a web-browser.
Cloud Infrastructure: The “bottom” layer (or foundation) of the Cloud Pyramid is the delivery of computer infrastructure through paravirtualisation. This includes servers, networks and other hardware appliances delivered as either Infrastructure Web Services or “cloud centres”. Full control of the infrastructure is provided at this level.
Cloud Platform: The “middle” layer of the Cloud Pyramid which provides a computing platform or framework (e.g., .NET, Ruby on Rails, or Python) as a service or stack. Control is limited to that of the platform or framework, but not at a lower level (server infrastructure).
Cloud Pyramid: A visual representation of Cloud Computing layers where differing segments are broken out by functionality.
Cluster: A group of linked computers that work together as if they were a single computer, for high availability and/or load balancing.
Elastic computing: The ability to dynamically provision and de-provision processing, memory, and storage resources to meet demands of peak usage without worrying about capacity planning and engineering for peak usage.
External cloud: Public or private cloud services that are provided by a third party outside the organisation.
Hybrid cloud: A networking environment that includes multiple integrated internal and/or external providers.
IaaS: Infrastructure as a service – Cloud service whereby a virtualised environment is delivered as a service over the Internet by the provider. The infrastructure can include servers, network equipment, and software.
On-demand service: A model by which a customer can purchase cloud services as needed.
vPrivate cloud: Services offered over the Internet or over a private internal network to only select users, not available to the general public.
Public cloud: Services offered over the public Internet and available to anyone who wants to purchase the service.
SaaS: Software as a service – Applications delivered over the Internet by a provider. The applications don’t have to be purchased, installed, and run on the customer’s computers.
Vertical cloud: A cloud computing environment that is optimised for use in a particular industry, such as health care or financial services.
Virtual private data centre: Resources grouped according to specific business objectives.
VPC: Virtual private cloud – A private cloud that exists within a shared or public cloud.