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ISC2 SSCP Oct 2025 outline · Domain 7: Systems & application security

Cloud models and shared responsibility (IaaS, PaaS, SaaS)

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Last reviewed September 25, 2026 · Leer en español

Cloud computing delivers computing resources on demand over a network. The widely used NIST definition lists five essential characteristics: on-demand self-service, broad network access, resource pooling (multi-tenancy), rapid elasticity and measured service (you pay for what you use). Understanding the service and deployment models is essential, because they decide who is responsible for which security controls.

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