Zero trust in one diagram
Never trust, always verify — what that actually means for an identity-first architecture.
The old model had a perimeter: inside the network was trusted, outside was not. Cloud, SaaS and remote work deleted the inside, so the perimeter moved to identity.
Zero trust means every request is authenticated, authorised and encrypted on its own merits — regardless of where it came from — and that authorisation is continuously re-evaluated rather than granted once at login.
For a product team it shows up as three concrete requirements: strong identity for both users and services, per-request policy decisions with device and context signals, and logging complete enough to reconstruct who did what.
The shape of it
- 01
Verify identity
Users and workloads both. Phishing-resistant factors for privileged actions.
- 02
Evaluate context
Device posture, location, behaviour — per request, not per session.
- 03
Grant least privilege
Time-bound, scope-bound access. Expiry by default.
- 04
Assume breach
Segment, log, and design for containment rather than prevention alone.
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