This work package provides organisations with expert guidance to design, architect, and implement a Zero Trust Architecture (ZTA) using the TOGAF Architecture Development Method (ADM). It integrates Zero Trust principles—continuous verification, least‑privilege access, micro‑segmentation, identity‑centric security—into the Business, Data, Application, and Technology Architecture layers.
The service enables organisations to embed Zero Trust as a strategic enterprise architecture capability, ensuring alignment with business objectives, governance, risk management, and long‑term digital transformation.
Assess current enterprise architecture maturity against TOGAF and Zero Trust principles.
Develop a Zero Trust Reference Architecture aligned to TOGAF ADM phases.
Integrate Zero Trust into business, data, application, and technology architectures.
Reduce implicit trust, lateral movement, and identity‑related risks.
Improve visibility, monitoring, and adaptive access enforcement.
Deliver a phased Zero Trust transformation roadmap aligned to enterprise strategy.
A TOGAF‑aligned Zero Trust maturity assessment.
A Zero Trust Reference Architecture mapped to TOGAF domains.
Hardened identity, device, network, application, and data controls.
Updated governance, architecture principles, and operating models.
Improved detection, response, and automation capabilities.
A multi‑phase Zero Trust transformation roadmap aligned to ADM.
Assessment across TOGAF ADM phases:
Preliminary Phase — Architecture capability, governance, principles
Phase A — Zero Trust vision, business drivers, stakeholder mapping
Phase B — Business Architecture alignment
Phase C — Data & Application Architecture alignment
Phase D — Technology Architecture alignment
Phase E/F — Migration planning & implementation roadmap
Phase G/H — Governance, change management, benefits realisation
Mapped to Zero Trust pillars:
Identity
Devices
Networks
Applications & Workloads
Data
Visibility & Analytics
Automation & Orchestration
Activities include:
Review of enterprise architecture artefacts.
Mapping of current capabilities to Zero Trust principles.
Gap analysis and prioritised recommendations.
Threat‑informed assessment aligned with TOGAF and ZTA.
Enterprise Zero Trust architecture blueprint aligned to TOGAF ADM.
Mapping of ZTA components to TOGAF domains:
Business Architecture → Zero Trust business capabilities
Data Architecture → Data classification, access, protection
Application Architecture → Identity‑aware applications, API security
Technology Architecture → PDP/PEP, identity provider, telemetry, segmentation
Micro‑segmentation and network isolation strategy.
Data protection and classification model.
Integration with cloud platforms (Azure, AWS, GCP, OCI).
Zero Trust business capability model.
Stakeholder analysis and organisational impact assessment.
Business process redesign for identity‑centric access.
Updated business principles and architecture governance.
Data classification and Zero Trust data access model.
Application identity and workload trust.
API security and gateway integration.
Secure DevOps and CI/CD pipeline controls.
Application segmentation and workload isolation.
Identity & Access Modernisation
Device & Endpoint Security
Network & Micro‑Segmentation
Cloud & Hybrid Security
Logging, Monitoring & Telemetry
Automation & Orchestration
All mapped to TOGAF Technology Architecture building blocks.
Prioritised Zero Trust capability roadmap.
Architecture work packages and implementation sequencing.
Dependency mapping across business, data, application, and technology layers.
Costing, resourcing, and risk analysis.
Zero Trust governance framework aligned to TOGAF.
Architecture Board updates and decision‑making workflows.
Policy lifecycle management.
Architecture compliance assessments.
Benefits realisation and continuous improvement.
TOGAF‑Aligned Zero Trust Maturity Assessment Report
Zero Trust Reference Architecture Blueprint (TOGAF‑aligned)
Business Architecture Impact Assessment
Data & Application Architecture Alignment Pack
Technology Architecture Hardening Pack
Migration Plan & Work Package Catalogue
Governance & Architecture Board Framework
Executive Summary & Board‑Level Presentation
Zero Trust Landing Zone (cloud or hybrid)
Secure DevOps / DevSecOps Integration Guide
Continuous Zero Trust Monitoring Service
Zero Trust Incident Response Playbooks
Multi‑Cloud Zero Trust Architecture
Preliminary Phase — Architecture capability & principles
Phase A — Zero Trust vision & business alignment
Phase B–D — Business, Data, Application & Technology Architecture
Phase E/F — Migration planning & implementation roadmap
Phase G — Governance & architecture compliance
Phase H — Continuous improvement & benefits realisation
Optional: Continuous Zero Trust Assurance (subscription)
Lead Enterprise Architect (TOGAF Certified)
Zero Trust Architect
Identity & Access Specialist
Network & Micro‑Segmentation Engineer
Cloud Security Architect
Governance & Compliance Analyst
Project Manager
Fixed‑price for assessment, architecture, and governance phases.
Time & materials for engineering, integration, and hardening.
Subscription/retainer for continuous Zero Trust monitoring and assurance.
Access to enterprise architecture artefacts and security platforms.
Engagement with IT, security, and architecture teams.
Availability of existing TOGAF documentation and architecture diagrams.
Client commitment to governance and operational adoption.
Legacy systems incompatible with ZT → mitigated through compensating controls and phased migration.
Architecture sprawl → mitigated through TOGAF governance and Architecture Board oversight.
Identity sprawl → mitigated through governance and rationalisation.
Operational resistance → mitigated through training and clear operating models.