A TOGAF case study rarely asks which technology is fashionable. It asks what an architect should do next when organizational goals, stakeholder concerns, constraints, and architecture evidence point in different directions. That is why OGEA-103's combined structure matters. The examination includes foundational knowledge and a scenario-based Part 2 that assesses application of the TOGAF Standard. The OGEA-103 combined exam is not interchangeable with Part 1 alone; a practitioner must know the vocabulary and demonstrate judgment about which action best advances an architecture effort. In Part 2, a plausible but premature technical recommendation can be weaker than a step that clarifies requirements or secures appropriate governance.
Consider an international manufacturer attempting to unify product traceability across factories acquired over twenty years. The business wants faster recalls, more reliable compliance reporting, and better inventory visibility. Each factory has different systems and management practices, while operations cannot tolerate a long shutdown. Several proposals appear reasonable: choose a new data platform, standardize identifiers, begin a pilot, or fund a broader enterprise architecture capability. The best sequence depends on the current architecture context and unresolved facts, not on the elegance of one proposal.
Read the scenario for its decision point
The first discipline is locating the central decision the question is testing. Is the enterprise defining the architecture vision, describing business capabilities, comparing technology options, or controlling delivery against an approved target? The same phrase—"improve data integration"—means different things in those contexts. An architecture team at the vision stage should clarify outcomes and stakeholders before selecting a platform. A team managing an approved migration may instead need to assess whether a proposed implementation deviates from requirements. Identify the phase and the reason for the requested action before looking for an attractive answer.
Scenarios frequently include distracting technical details. A factory might run an old database, but the important problem may be missing ownership of product identifiers. Replacing the database would not automatically solve that. Ask what evidence is available, what critical uncertainty remains, and which stakeholders must participate. This approach reflects the ADM's iterative nature: information from later work can force earlier assumptions to be revisited. Methodical reasoning beats a rigid belief that one phase always comes after another without exception.
Use stakeholder concerns to interpret value
A good architecture response recognizes that success has multiple dimensions. The operations director may value uninterrupted production, the compliance officer complete traceability, finance predictable cost, and product leadership faster time to market. Those interests can align but may conflict during a migration. An architect should identify concerns and viewpoints appropriate to the audience. A high-level capability map may help executives compare choices, whereas a detailed data lineage model may help compliance and integration engineers. Choosing the wrong artifact can make technically sound work ineffective.
In a scenario, a response that creates a comprehensive design without consulting affected owners is often weaker than one that validates business priorities and scope. Stakeholder engagement should not become endless discussion, however. The goal is to reach sufficient agreement to make responsible decisions. The architecture vision should capture the expected benefit and principal risks, creating a reference against which alternatives can later be judged. When viewpoints conflict, make the trade-off explicit. Hiding disagreement behind a diagram postpones the problem until delivery, where change is more expensive.
Recognize business architecture gaps
The manufacturer may have five different processes for recording a product batch. Before prescribing one application, map the capabilities, business processes, organization, and value streams involved. A capability such as "trace finished goods" can be supported by several processes and applications. This abstraction helps identify whether an improvement requires policy change, data ownership, automation, or new technology. The distinction is particularly important in acquired organizations, where different systems may all satisfy local needs but fail to support enterprise-wide reporting.
When evaluating answers, watch for solutions that substitute technical consolidation for business clarity. A single database will not define what a batch identifier means across factories. A shared interface will not establish responsibility for correcting bad records. The best next architectural action may be to establish common definitions, identify business owners, or assess capability gaps. TOGAF provides techniques to connect business outcomes to architecture choices, not simply a method for replacing many applications with one. Good scenario reasoning preserves this hierarchy of needs.
Follow requirements across architecture domains
Requirements management connects the ADM work. A compliance rule about traceability affects business processes, application capabilities, data quality, and the underlying infrastructure that records and retrieves evidence. A scenario may ask how to deal with a newly discovered requirement after technology design has begun. The architecture team should assess impact across relevant domains instead of quietly editing one component. Maintaining traceability allows stakeholders to see why a design exists and what needs retesting when a requirement changes.
Suppose regulators require proof of each movement of controlled material between factories. This could introduce new event capture, retention, identity, and audit requirements. The response should identify affected business and information systems artifacts, validate the requirement, and assess migration consequences. It would be premature to assume that adding a logging service alone satisfies the requirement. A traceable model helps reveal when a technical option solves only part of the business concern. Under exam conditions, this is often the difference between an answer that sounds active and one that is architecturally appropriate.
Evaluate target and transition architectures together
A target architecture presents the intended future state; transition architectures describe meaningful stages needed to reach it. Organizations cannot always replace old processes or platforms in one coordinated event. The manufacturer may first establish shared product identifiers, then connect two factories, then introduce a common reporting service, and only later retire legacy applications. Each stage needs its own value and operating assumptions. The team should assess dependencies, temporary integrations, workforce training, data migration, and the risk that two systems will disagree during coexistence.
A common scenario trap is choosing a target that looks optimal while ignoring the path to it. A complete redesign may be strategically attractive but operationally impossible within a regulatory deadline. A limited first stage can deliver value sooner, but might create debt if the temporary solution becomes permanent. Evaluate alternatives against architecture principles, stakeholder outcomes, constraints, and risk. A good answer does not always mean "migrate incrementally"; it means selecting and governing a sequence supported by the facts. The TOGAF Enterprise Architecture Foundation route supplies conceptual grounding, while the combined examination requires using concepts to choose defensible actions.
Apply governance without turning it into bureaucracy
Implementation governance checks that delivery choices remain consistent with approved architecture and managed exceptions. When a factory team proposes a local shortcut to meet a deadline, the architect should determine its effect on enterprise requirements and standards. The deviation may be acceptable for a limited period, but approval should include conditions, ownership, and an expiry or review point. Rejecting every exception blindly can be as unhelpful as ignoring architecture requirements entirely. Governance must support change while preserving the decisions that matter most.
Architecture change management also matters when new information emerges. A major acquisition might invalidate existing assumptions about geography and data residency. A modest interface correction might be handled within current governance, whereas a changed business strategy may justify a new architecture cycle. Scenario answers should match response size to change significance. An unnecessary full restart wastes resources; an informal workaround for a major strategic shift leaves the architecture misleading. Know when to assess, escalate, revise, or continue under controlled deviation.
Use the open-book reference intelligently
OGEA-103 Part 2 is open book through the exam's provided reference materials, but that does not remove the need to understand relationships among concepts. Looking up every basic term consumes attention that should be spent on the case. Preparation should include navigating the relevant body of knowledge, recognizing where methods and techniques are discussed, and applying them to short organizational problems. The scenario questions are designed to reward the quality of the chosen response, not the speed with which a definition can be located.
A useful exercise is to write four possible actions for one case: an immediate technical intervention, a stakeholder clarification step, a governance action, and a migration-planning action. Then identify which is most appropriate at the stated point and why the others are weaker, incomplete, or premature. Repeat the exercise after changing the facts. This builds the flexibility that a rote ADM phase mnemonic does not provide. It also helps distinguish an action that would eventually be useful from the best next action now.
Build a repeatable scenario-solving method
Start by naming the architecture problem in one sentence. Identify the relevant stakeholders, phase or decision context, constraints, and missing evidence. Then compare options against stakeholder value, method consistency, governance obligations, and implementation feasibility. If an option jumps straight to a tool, ask whether the organization has agreed on the business problem. If an option demands another broad analysis, ask whether sufficient evidence already exists to proceed. Strong answers make measured progress without ignoring risk.
For practice, use real but anonymized transformation stories: a banking modernization, a government service merger, or the manufacturer's traceability program. Walk each through the ADM and explain which artifact or decision would reduce uncertainty at key moments. The combined OGEA-103 route tests both conceptual recognition and applied judgment, and preparing through those connected decisions produces deeper architectural competence than learning isolated labels. The method should remain useful long after the examination, when stakeholders ask for recommendations rather than textbook definitions.
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