Basic understanding – What is Cloud.

Definition:
Using internet, we can access different services provided by the service providers is called cloud.
  • Let me elaborate the definition to understand more clearly, Please refer the below diagram:

  • Considering any website that a user wants to use on his machine (computer), let’s say for example as shown in image – portal.azure.com or www.office.com this URL are linked to the internet. (The owner must have Reserved Public facing IP addresses through ISP for hosting this websites over the internet, Microsoft is the owner in our case)
  • Now, when a user is triggering this website(s) this request will go to ISP (Internet Service Provider), for the time being we may consider a simple term i.e Internet.
  • When the website is triggered, request will go to internet and through the internet the request will be diverted to the origin (Hosting machine or server) – which is available on Service Provider’s Data Center, where actual webpage is hosted.
  • This data center may not be available at your place or could be miles apart from you (may be in a different country too), but the service of this website could be accessible to the user.
  • This service, that the user is accessible to via internet through the service provider is called as cloud service. Best examples of cloud services are – Facebook, WhatsApp, Instagram, LinkedIn etc. that we use in our day to day life.
  • Moreover, in the corporate level this service is now used to host their infrastructure. So, the servers and the other required service will be hosted on Data centers of the cloud service providers (such as – Microsoft Azure, Amazon Web Services, Google Cloud, VMware, IBM etc.), to access this server or services there are separate portals available which will be accessible by the administrator or other members of infrastructure team or the developers, depending on the service requirements (One of the example of portal I have used in the diagram portal.azure.com).
I have used very simple language with less technical terminology so that layman people can also understand the things clearly.

Hope the information is reliable. If something left or found any mistake please suggest.

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