Which type of cloud service can be protected by an inline firewall controlled by the organization rather than by the cloud provider?

Question

Options

• ASaaS
• BlaaS
• CPaaS
• DFaaS

• A
  4% (1)
• B
  89% (25)
• C
  7% (2)

Explanation

IaaS (Infrastructure as a Service) gives organizations control over the network layer, meaning they can deploy and manage their own inline firewall appliances or virtual network appliances in front of their workloads - the cloud provider only manages the underlying physical hardware.

Why the distractors are wrong:

• A (SaaS): The provider manages everything, including security; you can't insert your own firewall inline into the traffic path.
• C (PaaS): The provider controls the platform and runtime environment, leaving you responsible only for your application code - no network-layer control.
• D (FaaS): Function-as-a-Service is even more abstracted than PaaS; the provider manages execution, scaling, and networking entirely.

Memory tip: Think of the "I" in IaaS as "I control it" - the more abstract the service (PaaS → SaaS → FaaS), the less network-level access you retain, but with IaaS you're essentially renting raw infrastructure where you supply your own security stack.

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