What is Cloud Computing?

Simply put, cloud computing is the delivery of computing services—servers, storage, databases, networking, software, analytics, intelligence and more—over the Internet (“the cloud”) to offer faster innovation, flexible resources and economies of scale. You typically pay only for cloud services you use, helping lower your operating costs, run your infrastructure more efficiently and scale as your business needs change.

Cloud computing is a big shift from the traditional way businesses think about IT resources. Here are six common reasons organisations are turning to cloud computing services:

  • Cost: Cloud computing eliminates the capital expense of buying hardware and software and setting up and running on-site data centers
  • Speed: Computing resources can be provisioned in minutes, typically with just a few mouse clicks
  • Global Scale: Cloud delivers what ever resource is required right when it is needed and from the right geographic location
  • Productivity: Cloud computing removes the need for many of the IT administrative tasks
  • Performance: Cloud runs on the latest and most efficient computing infrastructure
  • Security: Cloud offers a broad set of policies, technologies and controls that strengthen your security posture overall

Types of cloud computing
Based on the ownership, cloud computing comes in three types:

  • Public: Owned and operated by a third-party cloud service providers
  • Private: Used exclusively by a single business or organisation
  • Hybrid: Hybrid clouds combine public and private clouds, bound together by technology that allows data and applications to be shared between them

Cloud services can be categorized into Infrastructure as a service (IaaS), Platform as a service (PaaS), Software as a service (SaaS) based on what is provisioned. For example, Virtual Machines on cloud come in IaaS, Operating systems fall in PaaS and hosted apps for email are SaaS

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