An organization is migrating its on-premises Security Operations Center (SOC) to a cloud-native architecture. The security team wants to leverage cloud services to automate incident response tasks, such as isolating compromised resources and enriching incident data. Which cloud service model would be most suitable for building these automated incident response playbooks and functions?

Correct answer: A. Function as a Service (FaaS)

Function as a Service (FaaS), often referred to as serverless computing, is ideal for automating incident response tasks. It allows security teams to deploy small, event-driven code snippets (functions) that can be triggered by alerts (e.g., from a SIEM) to perform specific, automated actions like isolating a virtual machine, enriching an incident with threat intelligence, or updating a firewall rule. This provides high scalability, cost-effectiveness, and eliminates server management overhead for these episodic tasks.