Page 52 - Cloud Essentials

CERTIFICATION OBJECTIVE 2.02

Characteristics of Clouds and Cloud Services from a
Business Perspective

Cloud computing is a business model, so using cloud services will offer
great advantages. When a business adopts cloud computing, the impact
resonates throughout the entire organization. Users will notice an improved

experience and will also enjoy the reduced cost of usage.

Scalability
In a typical organization, IT represents a large and fairly inflexible

investment. Without cloud computing, upgrading IT capacity can take as long
as weeks or months, and downsizing is quite difficult. In addition, the
development and rollout of new applications can also take months. Buying
and deploying servers, installing software on them, configuring them, and
getting ready for production can take a good deal of time and money.

In the cloud, adding mailboxes, new servers, additional

storage, and so on, is done via cloud provider web pages.

Capacity Planning
In the cloud, provisioning additional computing resources is quick and easy;
plus, you pay only for the resources you use. Figure 2-3 shows the
traditional IT performance and cost problems that are minimized with
proper capacity planning.

FIGURE 2-3 Capacity planning and IaaS, PaaS, and SaaS

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