CONCEP
   Introduction to Cloud Computing.
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   Advantages and Disadvantages of Cloud Computing
                                          
      
                Introductio
    One of the most important and highly useful invention in the 
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    technical  advancement  is  cloud  computing.  It  facilitates  its 
    services in almost all sectors based on computer applications. 
    For instance, in a present pandemic situation caused by COVID-
    19, most of the companies, organizations, business firms of both 
    private and government sectors throughout the globe are using 
    the  cloud  computing  applications  for  smooth  running  of  their 
    activities.  In  particular,  the  online  teaching  tools  are  playing 
    major role in the educational system. The application of cloud 
    computing is not limited to a particular sector, it covers almost 
    all sectors. So, in this context, an overview of cloud computing 
    and its applications are discussed in present article.
    Cloud computing is the way to access computing technique 
    through internet. It consists of both software and hardware 
    services, so that the user can locate easily anywhere in the 
    world. . Recently, academics as well as business industries 
    paid a great deal of attention to cloud computing. The main 
    objective  of  cloud  computing  is  to  reduce  the  cost  of 
    application tools and provide 24X7 hours online services to 
    the user.
        What is Cloud computing?
    The  term  cloud  refers  to  a  network  or  the  internet.  It  is  a 
    technology that uses remote servers on the internet to store, 
    manage, and access data online rather than local drives. The 
    data can be anything such as files, images, documents, audio, 
    video, and more.
    There are the following operations that we can do using cloud 
    computing:
    Developing new applications and services
    Storage, back up, and recovery of data
    Hosting blogs and websites
    Delivery of software on demand
    Analysis of data
    Streaming videos and audios
    Small  as  well  as  large  IT  companies,  follow  the  traditional 
             Why Cloud Computing?
    methods to provide the IT infrastructure. That means for any IT 
    company, we need a Server Room that is the basic need of IT 
    companies.
    In  that  server  room,  there  should  be  a  database  server,  mail 
    server,  networking,  firewalls,  routers,  modem,  switches,  QPS 
    (Query  Per  Second  means  how  much  queries  or  load  will  be 
    handled by the server), configurable system, high net speed, and 
    the maintenance engineers.
    To  establish  such  IT  infrastructure,  we  need  to  spend  lots  of 
    money. To overcome all these problems and to reduce the IT 
    infrastructure cost, Cloud Computing comes into existence.