What is cloud computing and how does it work? And it's Advantage and disadvantage

 You must have heard about cloud computing once or sometimes and on hearing this term, you must have come across many doubts, such as what is cloud computing, how is it used, what are its advantages or disadvantages or it  Where did technology come from, etc.

 In this article we will cover these topics, so if you also want to know the answers to all these questions, then read this article completely.


 What is cloud computing?

 If you are unsure about what cloud computing is, then you are probably among the 95% of people who are already using cloud services, such as online banking, social networks and Google Apps but don't realize it.  is.

 "Cloud" is a set of different types of hardware and software that work collectively to deliver many aspects of computing to the end-user as an online service.

 Cloud Computing is the use of hardware and software to deliver service over the network or the Internet.  With Cloud Computing, users can access files and use applications and from any device that can access the Internet.

 An example of a cloud computing provider is Google's Gmail.  Gmail users can access Google-hosted files and applications via the Internet from any device.

 There are 4 models of cloud computing in terms of different access and security options.  Before moving your data to the cloud, you need to consider which model will work best for your business and data needs.

  1.Private cloud

 A private cloud is where services and infrastructure are maintained and managed by you or a third party.  This option reduces potential security and controls risks, and if your data and applications are a core part of your business, it will suit you and require a high level of security or sensitive data requirements.

 2.Community cloud

 A community cloud exists, where many organizations share access to a private cloud with similar security considerations.  For example, a series of franchises have their own public clouds, but are hosted remotely in a private environment.

 3.Public cloud

 A public cloud is where services are stored off-site and accessed on the Internet.  Storage is managed by external organizations such as Google or Microsoft.  This service provides the greatest level of flexibility and cost savings;  However, it is more vulnerable than private clouds.

 4.Hybrid cloud

 A hybrid cloud model takes advantage of both public and private cloud services.  By spreading your options across different cloud models, you get the benefit of each model.

 For example, you can use a public cloud for your email to save on large storage costs, while keeping your highly sensitive data safe and secure behind your firewall in a private cloud.

 How does cloud computing work?

 So far, we have learned what Cloud Computing is and what are its four main models. Let's now know how it works:

 Three main types of cloud computing service models are available, commonly known as:

 Software as a Service (SaaS) Infrastructure as a Service (IaaS) Platform as a Service (PaaS).

 Depending on your needs, your business may use one of these service models or a mixture of all three.

 Software as a Service (SaaS)

 SaaS is the most common form of cloud computing for small businesses.  You can access software applications hosted on the Internet using a browser, instead of traditional applications stored on your PC or server.

 The software application host is responsible for controlling and maintaining the application, including software updates and settings.  You, as a user, have limited control over the application and configuration settings.

 Typical examples of SaaS are web-based mail service or customer relationship management system.

 Infrastructure as a Service (IaaS)

 IaaS usually means buying or renting your computer power and disk space from an external service provider.  This option allows you to access a private network or the Internet.

 The service provider maintains physical computer hardware, including CPU processing, memory, data storage and network connectivity.  Examples of IaaS include Amazon EC2, Rackspace and Windows Azure.

 Platform as a Service (PaaS)

 PaaS can be described as a crossover of both SaaS and IaaS.  Essentially you rent the hardware, operating systems, storage and network capacity that IaaS provides as well as software servers and application environments.  PaaS gives you more control over the technical aspects of your computing setup and the ability to customize it to your needs.

 Cloud computing benefits

 The exact advantages will vary according to the type of cloud service used, but, fundamentally, using cloud services means that companies do not need to buy or maintain their computing infrastructure.

 The company does not have to worry about updating the application or operating system or disposing of the hardware or software when they are out of date because these are all taken care of by the supplier.

 For commodity applications such as email, switching to cloud provider would be more appropriate than relying on in-house skills.

 A company that specializes in running and securing these services is likely to have better skills and more experienced staff than a small business, so cloud services may be able to provide more secure and efficient service to end users.  .

 Using cloud services means that companies can move quickly on projects and test concepts without lengthy purchases and large upfront costs, as firms pay only the resources they consume.  This concept of business agility is often cited by Cloud advocates as a major benefit.

 The ability to spin new services without the time and effort associated with traditional IT procurement should mean that it is easy to move quickly with new applications.  And if a new application makes the elastic nature of the cloud wildly popular it means that it is easy to scale up.

Advantages and disadvantages of cloud computing

 Cloud computing is not necessarily cheaper than other forms of computing, in which way renting is not always cheaper than buying in the long term.  If an application has a regular and predictable need for computing services, it may be more economical to provide that service in-house.

 Some companies may be reluctant to host sensitive data in a service that is also used by competitors.  Moving to the SaaS application may also mean that you are using the same applications as a competitor, which can be difficult to create any competitive advantage if that application is core to your business.

 Although it can be easy to start using new cloud applications, migrating existing data or apps to the cloud can be more complex and expensive.