Zero Trust Readiness Assessment Calculator

Evaluate your organization's Zero Trust security posture across the five core pillars: Identity, Devices, Network, Applications, and Data. Each pillar is scored 1–5 and weighted to produce an overall readiness score.

1. Identity Pillar

Covers MFA, identity governance, privileged access management, and SSO adoption.

2. Device Pillar

Covers endpoint compliance, MDM/EDR coverage, and device health attestation.

3. Network Pillar

Covers micro-segmentation, ZTNA/SDP adoption, and east-west traffic inspection.

4. Application Pillar

Covers app-level access control, API security, and DevSecOps integration.

5. Data Pillar

Covers data classification, DLP, and encryption at rest/in transit.

6. Visibility & Analytics (Cross-Pillar)

SIEM/SOAR, UEBA, and continuous monitoring capabilities.

Fill in all fields and click Calculate.

Formula

Step 1 – Normalize percentage inputs to 1–5 scale:
Score = 1 + (Percentage / 100) × 4
Applies to: MFA Coverage, MDM Coverage, ZTNA Coverage, Data Classification Coverage.

Step 2 – Pillar Scores (average of sub-components):
Identity Score = (MFA_score + IAM + PAM) / 3
Device Score = (MDM_score + EDR + Compliance) / 3
Network Score = (Micro-seg + ZTNA_score + Inspection) / 3
Application Score = (AppSec + API + DevSecOps) / 3
Data Score = (Classify_score + DLP + Encryption) / 3
Visibility Score = (SIEM + UEBA) / 2

Step 3 – Weighted Overall Score (1–5 scale):
Overall = Identity×0.25 + Device×0.20 + Network×0.20 + Application×0.15 + Data×0.15 + Visibility×0.05

Step 4 – Convert to 0–100% Readiness Score:
Readiness (%) = ((Overall − 1) / 4) × 100

Maturity Levels: 0–20% = Level 1 (Traditional) | 20–40% = Level 2 (Advanced) | 40–60% = Level 3 (Optimal) | 60–80% = Level 4 (Advanced Optimal) | 80–100% = Level 5 (Optimizing)

Assumptions & References

  • Pillar weights are informed by NIST SP 800-207 (Zero Trust Architecture) and the CISA Zero Trust Maturity Model v2.0 (2023), which emphasize Identity as the primary control plane (25% weight).
  • Network and Device pillars share equal weight (20% each) reflecting their foundational role in ZT enforcement.
  • Application and Data pillars (15% each) represent critical but often later-stage ZT implementations.
  • Visibility & Analytics (5%) is a cross-cutting capability; its lower weight reflects that it amplifies other pillars rather than standing alone.
  • The 1–5 maturity scale aligns with the CISA ZT Maturity Model stages: Traditional → Initial → Advanced → Optimal → Optimizing.
  • Percentage-to-score normalization uses a linear mapping: 0% → 1, 100% → 5, consistent with coverage-based scoring in Forrester Zero Trust eXtended (ZTX) Framework.
  • Sub-component averaging assumes equal importance within each pillar; organizations may adjust weights based on their specific threat model.
  • References: NIST SP 800-207 (2020), CISA ZT Maturity Model v2.0 (2023), Forrester ZTX Framework, DoD Zero Trust Strategy (2022).

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