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An organization is implementing a defense-in-depth strategy to protect its cloud workloads in Azure.
The security team needs to implement controls that filter external traffic at the network edge and protect cloud services from large-scale Distributed Denial of Service (DDoS) attacks before malicious requests can reach internal virtual networks.
Which layer of the defense-in-depth model addresses these requirements?
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The perimeter layer is the boundary in the defense-in-depth model focused on protecting an organization's network edge from external, internet-based threats. It serves as the initial line of defense against network-wide disruptions and unauthorized external traffic.
The perimeter layer stops attacks at the external boundary before they can consume internal compute, network, or storage resources, preventing downstream service outages across the entire architecture.