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    What is Cloud Computing?

    Cloud computing is the on-demand transportation of IT support and software via the webserver with pay-as-we-go costing. Whether we run software that offers images to thousands of cellular customers or give services that guide our essential business tasks, the cloud gives quick access to adaptable and low-price IT resources.

    Types of Cloud Computing

    Three types of clouds in cloud computing are as follows:

    Public Cloud

    In a public cloud, third-party service providers make resources and functions feasible to their users via the internet. The user applications and information are deployed on infrastructure possessed and secured through the service provider.

    Private Cloud

    A private cloud gives many of the similar advantages of a public cloud. Still, the organization or a third party’s services and data are handled entirely for the user organization. Generally, private cloud places grow administrative overheads on the user but give higher control over the infrastructure and decrease security-associated concerns. The infrastructure can be situated on or off the association premises.

    Hybrid Cloud

    The hybrid cloud is a mixture of both a private and a public cloud. The selection of what runs at the private versus the public cloud is generally based on several methods, including business criticality of the software, sensitivity of the records, industry certifications and norms required, regulations, and many more. But in some cases, spikes in demand for resources are also managed in the public cloud.

    History of the Cloud

    The history of the evolution of the cloud is shown in the following figure:

    What is Cloud Computing?

    Evolution of Cloud Computing

    The following table represents how cloud computing has evolved over some time:

    Year Event
    1950 Mainframe, dumb terminals
    1970 Virtual machines (VMs)
    1990 Virtual Private Network (VPN)
    1999 https://www.salesforce.com
    2000 Amazon’s modernized data centers
    2000 Google docs service
    2006 Launch of AWS services
    2008 Launch of Google app engine
    2010 Launch of Microsoft Azure

    The evolution of the cloud started in the 1950s and ideas, including service-oriented structure, virtualization, and autonomic and application computing are the stepping stones of today’s cloud computing:

      1. In the 1950s, mainframe computers were shared among several clients through dumb terminals for storing price and allowing practical usage of the resources.


      1. In the 1970s, VMs were developed to overcome the disadvantages of earlier technologies. VMs allowed us to run more than one several operating frameworks simultaneously in isolated environments, giving all-important resources such as CPU, disk, RAM, and NIC independently to all VMs.


      1. In the 1990s, telecom organizations started dedicated point-to-point information circuits known as VPN. It was provided at a fraction of the value of the then possible technologies. This invention made it feasible to use bandwidth optimally. VPN made it viable to offer shared access to a similar physical infrastructure to multiple customers in shared but isolated environments.


      1. In 1999, https://www.salesforce.com started delivering enterprise-level software services over the internet. This was one of the significant changes in cloud history.


      1. In the early 2000s, Amazon established a web-based retail function on its modernized data centers. While Amazon changed into hardly using 10% of its data center capacity, it realized that new cloud computing infrastructure models could make them more accurate and cost-effective.


      1. In the late 2000s, Google established its docs services directly to end clients. This gave the taste of cloud computing and record sharing to end-users.


      1. In 2006, Amazon formally released EC2 and S3. Later, over the years, Amazon released various cloud services under the name AWS.


      1. In 2008, Google introduced the release of its app engine services as a beta service. This was the starting of Google Cloud services.


    1. In 2010, Microsoft Azure was formally launched, followed by several cloud services in subsequent years.

    Cloud Service Models

    Three cloud-based service models are as follows:


    IaaS stands for Infrastructure as a Service. It incorporates the element building blocks for cloud IT and frequently provides access to networking functions, devices (virtual or committed hardware), and data storage space.

    IaaS offers us the highest level of adaptability and executives control over our IT resources. It is almost equivalent to existing IT assets that numerous IT departments and developers are familiar with today.


    PaaS stands for Platform as a Service. It eliminates the need for our association to handle the fundamental infrastructure (generally hardware and operating frameworks) and enables us to target on the deployment and management of our software.

    This facilitates us to be more accurate as we don’t require to worry about resource procurement, capacity planning, software maintenance, patching, or any other undifferentiated heavy lifting involved in running our software.


    SaaS stands for Software as a Service. It gives us a full product that is run and handled by the service provider. In most cases, the person referring to Software as a Service is relating to end-client software.

    An example of a SaaS application is a web-based email that we can send and get email without having to handle feature additions to the email items or support the servers and operating framework that the email program is running on.

    Advantages of Cloud Computing

    Following are the advantages of cloud computing

    What is Cloud Computing?
    1. Trade capital expense for variable expense

      Rather than getting to invest heavily in data centers and servers before we know how we are going to use them, we can pay just when we consume computing resources, and pay only for the amount we expend.

    2. Economies of Scale

      The second advantage of cloud computing is that associations benefit from large economies of scale. Using cloud computing, we can implement a lower variable cost than we would get on our own. Because usage from millions of users is aggregated in the cloud, distributors such as AWS can obtain higher economies of scale, which render into lower prices.

    3. Stop Guessing Capacity

      Eliminate guessing on our framework capability needs. While we make a capacity decision before deploying a software, we provide end up either sitting on costly idle resources or dealing with limited capacity.

      With cloud computing, these problems disappear. We can create as much or as little capacity as we require, and scale up and down as needed with only a few minutes’ notice.

    4. Increase Speed and Agility

      In a cloud computing environment, new IT assets are a single click away, which enables the association to decrease the time it takes to make those resources feasible to developers from weeks to only minutes. This outcome in a dramatic increase in speed and agility for the company because the cost and time it takes to experiment and create are fundamentally lower.

    5. Focus on Business Differentiators

      Cloud computing allows organizations to focus on their business needs instead of on the heavy lifting of racking, stacking, and powering servers. By embracing this paradigm shift, the association can stop spending money on running and maintaining data centers. This enables organizations to focus on projects that differentiate their businesses, for example, analysing petabytes of information, delivering video content, building great mobile software, or even exploring Mars.

    6. Go Global in Minutes

      The next advantage of cloud computing is the capability to go global in minutes. Association can essentially deploy their software to multiple areas across the world with just a few clicks. This permits association to give redundancy across the globe and to deliver lower latency and better experiences to their users at an insignificant expense.

      Going global can something only the highest enterprises could afford to do, but cloud computing democratizes this ability, making it feasible for any association.

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