Cloud Computing Value Survey
The National Institute of Standards and Technology (NIST) has issued a draft
working definition of cloud computing which defines the term as “a model for
enabling convenient, on-demand network access to a shared pool of
configurable computing resources (e.g., networks, servers, storage, applications,
and services) that can be rapidly provisioned and released with minimal
management effort or service provider interaction”.
Cloud computing has five essential characteristics; On-demand self-service,
Broad network access, Resource pooling, Rapid elasticity, and Measured service
Three service models; Software as a Service — SaaS, Platform as a Service —
PaaS and Infrastructure as a Service — IaaS
and four deployment models; Private, Community, Public and Hybrid.

Cloud Computing benefits include:
- Significant Cost Reduction: Cloud computing is available at a fraction of the
cost of traditional IT services, eliminating upfront capital expenditures and
dramatically reducing administrative burden on IT resources.
- Increased Flexibility: Cloud computing provides on-demand computing
across technologies, business solutions and large ecosystems of providers,
reducing time to implement new solutions from months to days.
- Access anywhere: You are no longer tethered to a single computer or
network. You can change computers or move to portable devices, and your
existing applications and documents follow you through the cloud.
- Elastic scalability and pay-as-you-go: Add and subtract capacity as your
needs change. Pay for only what you use.
- Easy to implement: You do not need to purchase hardware, software licenses
or implementation services.
- Service quality: Cloud service providers offer reliable services, large storage
and computing capacity, and 24/7 service and up-time.
- Delegate non-critical applications: Cloud computing provides a way to
outsource non-critical applications to service providers, allowing agency IT
resources to focus on business-critical applications.
- Always the latest software: You are no longer faced with choosing between
obsolete software and high upgrade costs. When the applications are web-
based, updates are automatic and are available the next time you log into the
cloud.
- Sharing documents and group collaboration: Cloud computing lets you
access all your applications and documents from anywhere in the world,
freeing you from the confines of the desktop and facilitating group
collaboration on documents and projects.