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A cloud security architect has been tasked with finding a solution for hardening VMs. The solution must meet the following requirements: - Data needs to be stored outside of the VMs. - No unauthorized modifications to the VMs are allowed. - If a change needs to be done, a new VM needs to be deployed. Which of the following is the best solution?
Correct Answer: A
An immutable infrastructure approach ensures that VM images are never altered in place. All state and data live externally (for example in object storage or managed databases), and any required change, be it patching or configuration, happens by building and rolling out a fresh VM image. This guarantees no unauthorized drift or in-place modification on running instances.