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AWS ─ Cloud Computing

AWS ─ Cloud Computing
In this article, we introduced you to a few AWs cloud computing concepts. We described the basic features of public, private, and hybrid clouds. advantages and disadvantages of cloud computing.
In 2006, Amazon Web Services (AWS) started to offer IT services to the market in the form of web services, which is nowadays known as cloud computing. With this cloud, we need not plan for servers and other IT infrastructure which takes up much of time in advance. Instead, these services can instantly spin up hundreds or thousands of servers in minutes and deliver results faster. We pay only for what we use with no up-front expenses and no long-term commitments, which makes AWS cost efficient. Today, AWS provides a highly reliable, scalable, low-cost infrastructure platform in the cloud that powers a multitude of businesses in 190 countries around the world. For more Learn AWS Certification Training.

What is cloud computing? 

Cloud computing is Internet-based computing in which large groups of remote servers are networked to allow centralized data storage and learn online training to computer services or resources.

There are several other broadly accepted definitions of cloud computing. Some explicitly emphasize reconfigurability of the resources, while others include the need for rapid on-demand provisioning of resources, and still, others drop the requirement of access via the internet. We define cloud computing as a model that enables the features listed here:
  • Users should be able to provision and release resources on-demand
  • The resources can be scaled up or down automatically, depending on the load
  • The provisioned resources should be accessible over a network
  • Cloud service providers should enable a pay-as-you-go model, where customers are charged based on the type and quantum of resources they consume.

Types of Clouds:

There are three types of clouds - Public, Private, and Hybrid cloud. 

Public Cloud:

In the public cloud, third-party service providers make resources and services available to their customers via the Internet. Customer’s data and related security are with the service providers’ owned infrastructure. 

Private Cloud:

A private cloud also provides almost similar features as a public cloud, but the data and services are managed by the organization or by the third party only for the customer’s organization. In this type of cloud, major control is over the infrastructure so security-related issues are minimized. 

Hybrid Cloud:

A hybrid cloud is the combination of both private and public cloud. The decision to run on private or public cloud usually depends on various parameters like the sensitivity of data and applications, industry certifications and required standards, regulations, etc. 

Cloud Service Models:
There are three types of service models in cloud - IaaS, PaaS, and SaaS.


IaaS stands for Infrastructure as a Service. It provides users with the capability to provision processing, storage, and network connectivity on demand. Using this service model, the customers can develop their own applications on these resources. 


PaaS stands for Platform as a Service. Here, the service provider provides various services like databases, queues, workflow engines, e-mails, etc. to their customers. The customer can then use these components for building their own applications. The services, availability of resources and data backup are handled by the service provider that helps the customers to focus more on their application's functionality. 


SaaS stands for Software as a Service. As the name suggests, here the third-party providers provide end-user applications to their customers with some administrative capability at the application level, such as the ability to create and manage their users. Also, some level of customizability is possible such as the customers can use their own corporate logos, colours, etc.  

Advantages of Cloud Computing
Here is a list of some of the most important advantages that Cloud Computing has to offer:

  • Cost-Efficient: Building our own servers and tools is time-consuming as well as expensive as we need to order, pay for, install, and configure expensive hardware, long before we need it. However, using cloud computing, we only pay for the amount we use and when we use the computing resources. In this manner, you learn AWS Online Training with cloud computing. 
  • Reliability: A cloud computing platform provides much more managed, reliable and consistent service than an in-house IT infrastructure. It guarantees 24x7 and 365 days of service. If any of the servers fails, then hosted applications and services can easily be transited to any of the available servers. 
  • Unlimited Storage: Cloud computing provides almost unlimited storage capacity, i.e., we need not worry about running out of storage space or increasing our current storage space availability. We can access as much or as little as we need.
  • Backup & Recovery: Storing data in the cloud, backing it up and restoring the same is relatively easier than storing it on a physical device. The cloud service providers also have enough technology to recover our data, so there is the convenience of recovering our data anytime. 
  • Easy Access to Information: Once you register yourself in a cloud, you can access your account from anywhere in the world provided there is internet connection at that point. There are various storage and security facilities that vary with the account type chosen. 
Disadvantages of Cloud Computing

Although Cloud Computing provides a wonderful set of advantages, it has some drawbacks as well that often raise questions about its efficiency.

  • Security issues: Security is a major issue in cloud computing. The cloud service providers implement the best security standards and industry certifications, however, storing data and important files on external service providers always bears a risk. AWS cloud infrastructure is designed to be the most flexible and secure cloud network. It provides a scalable and highly reliable platform that enables customers to deploy applications and data quickly and securely. 

  • Technical issues: As cloud service providers offer services to a number of clients each day, sometimes the system can have some serious issues leading to business processes temporarily being suspended. Additionally, if the internet connection is offline then we will not be able to access any of the applications, server, or data from the cloud. 

  • Not easy to switch service providers: Cloud service providers promise vendors that the cloud will be flexible to use and integrate, however switching cloud services is not easy. Most organizations may find it difficult to host and integrate current cloud applications on another platform. Interoperability and support issues may arise such as applications developed on the Linux platform may not work properly on Microsoft Development Framework (.Net). 
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