Which cloud computing service model is not defined by NIST?1 pointSoftware as a Service (SaaS)Infrastructure as a Service (IaaS)Desktop as a Service (DaaS)Platform as a Service (PaaS)

Sure, let's break down the question step by step to find the correct answer.

1. Understanding the Question:

   • The question asks which cloud computing service model is not defined by the National Institute of Standards and Technology (NIST).

2. Identifying the Options:

   • Software as a Service (SaaS)
   • Infrastructure as a Service (IaaS)
   • Desktop as a Service (DaaS)
   • Platform as a Service (PaaS)

3. NIST-Defined Cloud Service Models:

   • According to NIST, the three primary cloud service models are:
     • Software as a Service (SaaS): This model provides software applications over the internet, eliminating the need for local installation.
     • Infrastructure as a Service (IaaS): This model offers virtualized computing resources over the internet, such as virtual machines, storage, and networks.
     • Platform as a Service (PaaS): This model provides a platform allowing customers to develop, run, and manage applications without dealing with the underlying infrastructure.

4. Evaluating the Remaining Option:

   • Desktop as a Service (DaaS): This model delivers virtual desktops to end-users over the internet. While it is a recognized cloud service model, it is not one of the primary models defined by NIST.

5. Conclusion:

   • The cloud computing service model not defined by NIST is Desktop as a Service (DaaS).

So, the correct answer is: Desktop as a Service (DaaS)