Cloud Service Models and Categories
Cloud computing services are often provided as one of three main service models, also known as service categories. In order to pass the CCSP exam, the (ISC)2 CBK requires you to know the cloud service models and be able to describe their differences.
The NIST Special Publication 800-145 titled The NIST Definition of Cloud Computing defines three fundamental cloud computing service models as follows:
- IaaS: IaaS is the capability provided to the cloud consumer to provision processing, storage, networks, and other fundamental computing resources where you are able to deploy and run arbitrary software that can include operating systems and applications. The consumer not only manages or controls the underlying cloud infrastructure but also has control over operating systems, storage, and deployed applications; and possibly limited control of select networking components (e.g., host firewalls).
- PaaS: PaaS is the capability provided to the...
