Comparisons

Zero Trust vs Defense-in-Depth vs Perimeters

Venn Diagrams · made in Skemio

Venn diagram comparing Perimeter Security, Defense in Depth, and Zero Trust showing overlaps in bastion hardening, least privilege, and continuous auth.
Venn diagram comparing Perimeter Security, Defense in Depth, and Zero Trust showing overlaps in bastion hardening, least privilege, and continuous auth.
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What it shows

  • Perimeter security creates a hard shell with vulnerable internal networks.
  • Defense-in-depth layers controls across physical, host, and app tiers.
  • Zero Trust verifies identity and context continuously on every request.

The takeaway

Zero Trust does not replace defense-in-depth; it strips implicit trust from every single layer.

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