#13 CLOUD COMPUTING

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 What is Cloud computing

Cloud computing is defined as the use of different resources via Internet access, such as application development frameworks, storage, servers, as well as other software.

Cloud service providers have three common features that are described below:

  • Services are flexible
  • The costs of the facilities used, which may involve memory, preparation time, and bandwidth, must be charged by the user.
  • The back-end of the software is handled by cloud service providers.

Cloud computing Service Models



In terms of market structures, cloud computing systems can be implemented, which may vary based on particular requirements. Some of the traditional application services used are briefly listed below. They are-

1. Platform as a service (PaaS)

PaaS enables consumers to browse platform access, enabling them to implement the software and cloud implementations. Operating systems or internet connectivity are not controlled by the user, which can impose some limitations on the software's scope that can be implemented. Instances include Amazon Web Services, Rackspace, and Microsoft Azure.

2. Software as a service (SaaS)

In SaaS, the right to access or use of a cloud-hosted program or service must be purchased by customers.

3. Infrastructure as a service (IaaS)

In IaaS, customers can monitor and handle the operating systems, software, network access, and storage without managing the cloud itself.

Cloud computing Deployment Models



Cloud computing virtualization technologies also rely on prerequisites, just the same as the deployment model. There are four main types of models, each having its own features.

1. Community cloud

Cloud-based infrastructure and services enable multiple companies with similar goals and similar requirements to access a cloud. As an outcome, it is spread by the various organizations using it; this reduces capital spending expenditures. These activities may be implemented on-site with a third party.

2. Private Cloud

For particular organizations only, private clouds are deployed, managed, and controlled.

3. Public Cloud

Public clouds will be used on a subscription basis by the people but are operated by a company of cloud service. Consequently, without the considerable economic resources needed for other deployment options, a customer can build and implement a service.

4. Hybrid cloud

Numerous kinds of clouds comprise of this sort of cloud services. However such cloud has the ability to enable data and apps to migrate from one domain to the next. Hybrid clouds may also be a mixture of public and private clouds.

Advantages of Cloud computing

Among the several challenges raised by cloud computing, some advantages of cloud computing are defined below-

1. Flexibility

Cloud Computing enables businesses to operate with a small cloud implementation and grow very quickly and effectively. When the situation requires it, scaled back can also be achieved soon. It also allows businesses, when appropriate, to add additional resources that help to reach increasing consumer demands.

2. Consistency

System security and recovery procedures are supported by service providers using various inefficient webpages.

3. Save expenditure

Once it comes to enhancing the computational capabilities, enterprises can dramatically reduce their capital and operational spending through cloud computing.

4. Mobile Accessibility

Mobile connectivity is also supported to a greater degree by cloud computing.

5. Maintenance

The cloud computing providers often perform maintenance activities.

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