Cloud Computing | Why Traditional Laptop Demand Is Dying

Cloud computing: What it is, how it works, 2 versions, SaaS, IaaS, network access, monthly payments

What is cloud computing?

Accessing your data via the Internet anywhere, anytime and being able to use any or all of the data and applications that you want.

Cloud computing is a comprehensive solution that delivers IT as a service. It is an Internet-based computing solution that allows you to use data bases and software applications without having to download them on to your personal computing device.

Since you use collective computing power, this resource is more effectively allocated based on usage.

Cloud has often been used as a metaphor for Internet in the network diagram. Cloud computing is a new IT delivery model accessed over the network (Internet or intranet).

How does it work?

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In the simplest terms, cloud computing involves delivering hosted services over the Internet.

The service end is where the data or software is stored and the user end is a single person or company network.

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Who uses cloud computing?

You are probably using it right now.

If you use email, or go to a social network and post photos, access online document software, or use your company’s hardware and software, you’re probably using the cloud.

You may also use it to store online tax or financial records and back-up your files for storage. Typical offerings for everyday use are Google Drive, One Drive, iCloud and Dropbox.

The five characteristics that define cloud computing:

1. There are two versions of cloud computing you should know about

There are several varieties of cloud computing services. Depending on your company’s IT needs, you might be able to use a cloud service instead of investing in new IT hardware.

Two of the more popular versions of cloud offerings are Software-as-a-Service (SaaS) and Infrastructure-as-a-Service (IaaS).

With SaaS, the cloud service provider hosts your enterprise applications and associated data on its servers and storage systems. Users gain access to SaaS applications using a Web browser.

And your company would typically pay a fee per user per month.

With IaaS, the provider offers virtual machines, physical servers, storage, switching, and connectivity resources to run your enterprise applications on a pay-as-you-go basis.

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You are responsible for installing and maintaining the operating system and application or virtual machine; the provider is responsible for managing the infrastructure hardware that the applications or virtual machines run on.

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2. On-demand self-service

This means provisioning or de-provisioning computing resources as needed in an automated fashion without human intervention. An analogy to this is electricity as a utility where a consumer can turn on or off a switch on-demand to use as much electricity as required.

3. Ubiquitous network access

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This means that computing facilities can be accessed from anywhere over the network using any sort of device that can access the Internet. E.g. smart phones, tablets, laptops, personal computers.

Increasingly smart devices are being used to control home systems, temperatures and appliances.

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4. Resource pooling

This means that computing resources are pooled to meet the demand of the consumers so that resources (physical or virtual) can be dynamically assigned, reassigned or de-allocated as per the requirement.

Generally the consumers are not aware of the exact location of computing resources. However, they may be able to specify location (country, city, region and the like) for their need.

5. Measured service

This means that consumers only pay for the computing resources they have used. This concept is similar to utilities like water or electricity.

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