Part 2 Exam Preparation

Enterprise Architecture
Case Studies

Twelve real-world enterprise architecture scenarios across sectors — banking, healthcare, government, manufacturing, and more. Each case study maps directly to OGEA-103 ADM phases and Part 2 scenario-based exam skills.

12 Case Studies 7 Industry Sectors All ADM Phases Covered Part 2 Exam Mapped
Scenario Library

12 Real-World EA Scenarios

Each case study presents an enterprise architecture challenge mapped to specific TOGAF ADM phases, governance mechanisms, and Part 2 exam competencies.

01

Global Banking Transformation

Banking Advanced

MegaBank must consolidate three legacy core banking systems — each with decades of accumulated technical debt — into a unified, cloud-native platform without disrupting 24/7 financial operations. The programme spans five years, three jurisdictions, and involves 800+ downstream integrations requiring phased decommission.

Phase A Phase B Phase C Phase D Phase E Phase F
Key Topics
Migration Planning Transition Architectures Governance
02

NHS Digital Health Platform

Healthcare Advanced

A national health service is building a unified patient data platform enabling real-time information sharing across 200 NHS trusts, GP practices, and social care providers. The initiative must balance data accessibility for clinicians with stringent UK GDPR and patient privacy obligations at national scale.

Phase A Phase B Phase G
Key Topics
Data Architecture Privacy Stakeholder Management
03

Government Digital Services

Government Intermediate

A federal agency is modernizing its citizen-facing services portal, replacing 15 fragmented departmental websites with a single, accessible digital gateway backed by shared capability components. The project requires extensive change management across 12 business units with differing legacy constraints and political priorities.

Phase B Phase C
Key Topics
Business Architecture Capability Mapping Change Management
04

Insurance Company Modernization

Insurance Advanced

A legacy insurer is transforming its monolithic policy administration system into a digital-first microservices architecture, enabling real-time underwriting, API-based distribution, and embedded insurance products. The full ADM lifecycle must be applied, with three distinct transition states before the target is reached.

Preliminary Phase A Phase B Phase C Phase D Phase E Phase F Phase G Phase H
Key Topics
Application Architecture Transition Architecture
05

Retail Omnichannel Transformation

Retail Intermediate

A traditional high-street retailer is building a unified customer experience across in-store, online, and mobile touchpoints, requiring shared inventory, identity, and loyalty capabilities that currently exist in separate siloed systems. The business architecture must model new omnichannel value streams while rationalizing a fragmented technology estate.

Phase B Phase D
Key Topics
Business Capability Technology Architecture
06

Manufacturing Industry 4.0

Manufacturing Advanced

A global manufacturer is integrating IoT sensors, edge computing, and AI-driven predictive maintenance across 18 factories, converging Operational Technology (OT) with Information Technology (IT) for the first time. Standards-based reference architectures are essential to ensure interoperability across diverse plant equipment vendors and a multi-year rollout.

Phase D Phase E
Key Topics
Technology Architecture Reference Models
07

Telecom Cloud Migration

Telecommunications Advanced

A Tier 1 telco is migrating its Business Support Systems (BSS) and Operations Support Systems (OSS) from on-premises data centres to a multi-cloud architecture across AWS, Azure, and a private cloud. The phased migration must maintain 99.999% service availability for 40 million subscribers throughout the transition period.

Phase E Phase F
Key Topics
Migration Planning Transition Architectures
08

Energy Sector EA Programme

Energy / Utilities Intermediate

A national energy utility is developing a smart grid architecture to integrate renewable generation sources, bidirectional metering, and demand-response systems across a transmission network serving 6 million customers. The architecture vision must align competing stakeholder groups — regulators, generation partners, and consumer advocacy bodies — each with conflicting priorities.

Phase A Phase B
Key Topics
Architecture Vision Stakeholder Management
09

University Digital Transformation

Higher Education Beginner

A large research university is consolidating eight disparate Student Information Systems — accumulated through faculty autonomy and historic acquisitions — into a single, integrated platform supporting admissions, curriculum, assessment, and alumni services. The programme is the university's first enterprise architecture initiative, providing an ideal entry point for understanding Phases A through D.

Phase A Phase B Phase C Phase D
Key Topics
Application Architecture Data Architecture
10

Government Enterprise Architecture

Government Advanced

A central government body is establishing a federated enterprise architecture practice and governance framework across 20 agencies — each at different levels of EA maturity — to enable cross-agency data sharing, reduce duplication, and accelerate digital public services. The challenge focuses heavily on architecture governance, Architecture Board design, and the Preliminary Phase in a federated context.

Preliminary Governance
Key Topics
Architecture Governance Capability Framework
11

Pharmaceutical Data Architecture

Healthcare / Pharma Advanced

A global pharmaceutical company is unifying clinical trial data architecture across 47 countries, enabling consistent patient safety reporting, regulatory submission, and AI-assisted drug discovery while meeting FDA 21 CFR Part 11 and EMA compliance requirements. The Data Architecture phase is the critical focus, with compliance constraints shaping every architectural decision.

Phase C
Key Topics
Data Architecture Compliance
12

Startup Scale-Up Architecture

Technology Intermediate

A fast-growing SaaS company with 200 engineers is establishing its first formal enterprise architecture practice — defining architecture principles, governance structures, and an architecture repository from scratch while keeping pace with rapid product development. The case explores how TOGAF's Preliminary Phase and Architecture Vision are applied in an agile, startup-scale context.

Preliminary Phase A Phase B
Key Topics
Preliminary Phase Architecture Principles
Exam Strategy

How to Use Case Studies for the Part 2 Exam

The OGEA-102 (Part 2) and OGEA-103 combined exam tests your ability to apply TOGAF knowledge within realistic, complex scenarios. Here is how to maximise your preparation.

Understanding the Part 2 Scenario Format

The OGEA-102 Part 2 examination presents eight scenario-based questions, each built around a realistic enterprise architecture situation. Unlike Part 1 (which tests recall), Part 2 tests your ability to analyse, reason, and recommend — selecting the most appropriate TOGAF response from four gradient answer options.

Each scenario question describes an organization, its context, a specific EA challenge or decision point, and asks you to identify the best course of action according to TOGAF principles. Answers are scored on a partial-credit gradient (5-4-2-0 points), meaning even a partially correct answer earns marks — but you must distinguish the best answer from plausible alternatives.

The most common trap is selecting an answer that is correct in general practice but not the best TOGAF approach for the specific phase or context described. These case studies train you to anchor every recommendation in the relevant ADM phase and governance mechanism.

Part 2 Exam at a Glance

  • 8 scenario questions, each worth up to 5 points (40 points total)
  • Gradient scoring: best answer = 5, acceptable = 4, poor = 2, wrong = 0
  • Pass mark: 60% (24 out of 40 points)
  • Open book — you may use the TOGAF Standard during the exam
  • 90 minutes for the Part 2 section of OGEA-103
  • Questions focus on ADM phases, governance, deliverables, and stakeholder management

Identify the ADM Phase First

Before reading the answer options, determine which ADM phase or governance mechanism the scenario is describing. This narrows your frame of reference and prevents generic answers.

Spot the Deliberate Distractors

Two of the four options are usually plausible but wrong — they describe valid EA activities applied to the wrong phase or in the wrong order. TOGAF sequencing matters.

Apply Stakeholder Thinking

Many Part 2 questions involve stakeholder management decisions. Use the stakeholder map and concern-driven view selection approach from Phase A and Phase B.

Reference the TOGAF Standard Efficiently

The exam is open book, but time is tight. Practise navigating quickly to Phase objectives, inputs/outputs, and governance sections. Know the chapter structure before exam day.

Practice Timed Scenario Reading

You have roughly 11 minutes per question including reading time. Train yourself to extract the key decision context in under 2 minutes, leaving time for careful answer selection.