// Hacker Noon · 1 April 2026

The Cybersecurity Value Chain: How 25 Companies Fill 72 Foundational Roles

The cybersecurity industry isn't 72 companies — it's 25 companies filling 72 foundational roles across a layered value chain from identity and endpoint at the edge to SIEM, SOAR, and managed services at the core. The most consequential vendors — Palo Alto Networks, Microsoft, IBM, AWS, Google Cloud,...

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