Cloud Computing

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what is cloud computing?
Cloud computing is a shared pools of computer system resources and high-level services that can be maintained with minimal effort over the Internet.

Three types of service model:
  1. Platform as a service (PAAS)
  2. Infrastructure as a service(IAAS)
  3. Software as a service (SAAS)
Cloud Types:
there are three types of cloud
1. Public Cloud: public cloud is open for general use and is usually free
2. Private Cloud: a private cloud is usually owned by an organization, although there's little to no difference with public cloud the security is a lot more tight
3. Hybrid Cloud: hybrid cloud combines the two types of cloud and bound them together.

why should we use cloud?
  • efficiency
  • flexibility 
  • disaster recovery
  • security
  • and many more

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