Terminology Index

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Cloud Computing

The on-demand delivery of computing resources, servers, storage, databases, and software, over the internet from a provider, paid for as used rather than owned. It is the foundation that all cloud security concepts build upon.

Cloud computing lets organizations rent scalable infrastructure and services instead of buying and running their own, with the provider operating the underlying hardware and data centers. This shifts both capability and responsibility: it enables speed and scale but introduces shared responsibility, new attack surfaces like the management plane, and configuration as the dominant risk. Understanding the service models (IaaS, PaaS, SaaS) and deployment models is the starting point for securing anything in the cloud.

Introduced in: Cloud Security Foundations

Examples

  • Renting virtual servers on demand instead of buying physical hardware.
  • Using a managed cloud database rather than running your own.
  • Scaling capacity up during peak load and paying only for what is used.