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Cloud Computing

Cloud computing delivers configurable computing resources as on-demand services over a network, with rapid provisioning, measured use, and shared provider infrastructure.

What it means

A cloud consumer obtains capabilities such as compute, storage, networking, databases, analytics, and software without owning every underlying component. The provider and customer divide operational and security responsibilities according to the service and contract.

Why it matters

Cloud changes how systems are funded, deployed, scaled, governed, and secured. Understanding the operating model is more important than memorizing one provider's product names.

Practical focus

  • Identify the business outcome before choosing a cloud service
  • Map ownership for identity, data, configuration, logging, and recovery
  • Design for automation and repeatability
  • Measure cost, reliability, security, and performance together

Common mistakes

  • Treating cloud as only someone else's datacenter
  • Assuming managed services remove customer accountability
  • Moving workloads without changing operating practices

Certification relevance

This subject appears in or supports the following certification bodies of knowledge:

AWS Cloud PractitionerAzure FundamentalsGoogle Cloud Digital LeaderCompTIA Cloud+ISC2 CCSP

Authoritative sources