What Is OG0-091 Certification?

What Is OG0-091 Certification?

OG0-091 is the exam code for the TOGAF 9 Part 1 Examination, the entry-level test that awards the TOGAF 9 Foundation credential. It is a closed-book, multiple-choice exam built entirely around the TOGAF 9 Standard, Version 9.2, and it exists specifically to confirm that a candidate understands the terminology, structure, and core concepts of the TOGAF framework before attempting more advanced, scenario-based certification levels.

Unlike many IT certifications that blend hands-on labs with theory, OG0-091 is purely knowledge-based. There is no software to configure and no project to submit. You are tested on definitions, phase sequencing, and the purpose of specific TOGAF artifacts. If you're still mapping out what this credential actually covers, the OG0-091 Exam Domains 2026: Complete Guide to All 11 Content Areas breaks down every tested area in depth.

Who Runs OG0-091 and Why It Matters

OG0-091 is owned and governed by The Open Group, the same consortium that maintains the TOGAF standard itself. This matters because the exam content is written directly from the source material - there's no third-party interpretation layer between the standard and the test questions. When you study the TOGAF 9.2 documentation, you are studying the actual exam blueprint, not a simplified summary.

Because The Open Group controls both the standard and the exam, updates to TOGAF terminology or phase definitions flow directly into OG0-091 question banks. This tight coupling is why generic "enterprise architecture" study guides that aren't aligned to TOGAF 9.2 specifically can lead candidates astray on exam day.

Exam Format, Timing, and Scoring

The exam consists of 40 simple multiple-choice questions to be completed in 60 minutes. "Simple" multiple-choice here means single-best-answer format - you pick one option per question rather than selecting multiple correct answers or ranking choices, which is the format used at the Part 2 level. This makes OG0-091 faster to move through per question, but it also means there's little room to hedge; you either recall the correct TOGAF terminology or you don't.

To pass, you need a raw score of 24 out of 40, which equals 60%. That's a lower bar than many professional certifications, but the exam compresses a large body of knowledge into a short window - roughly 90 seconds per question - so recognition speed matters as much as raw understanding.

For a detailed breakdown of what makes this timing and format challenging in practice, see How Hard Is the OG0-091 Exam? Complete Difficulty Guide 2026.

Registration, Fees, and Delivery Options

OG0-091 is delivered through Pearson VUE, either at authorized physical test centers or remotely via OnVUE online proctoring. Both delivery methods use the same question bank and time limit, so the choice comes down to convenience and your comfort with remote proctoring requirements (webcam, ID check, and a private room).

For 2026, candidates should budget one of the following:

There are no prerequisites for OG0-091 - no prior TOGAF training, work experience, or other certifications are required to register. This open-access policy is a big reason the exam is a common entry point for architects, analysts, and consultants moving into enterprise architecture roles. A full cost comparison, including training options, is available in OG0-091 Certification Cost 2026: Complete Pricing Breakdown.

The 11 OG0-091 Exam Domains

The Open Group organizes OG0-091 content into 11 weighted domains. Understanding these weights is essential because they tell you exactly where to invest study hours rather than spreading effort evenly across topics you may already know.

The remaining domains - Architecture Views, Viewpoints, and Stakeholders (5%), Building Blocks (5%), ADM Deliverables (5%), and TOGAF Reference Models (5%) - each carry lighter individual weight but collectively make up a fifth of the exam. Skipping any of them to focus only on ADM Phases is a common and costly mistake. The complete domain-by-domain guide at OG0-091 Exam Domains 2026: Complete Guide to All 11 Content Areas covers each in more depth, and dedicated guides exist for the earliest domains, including Domain 1: Basic Concepts, Domain 2: Core Concepts, Domain 3: Introduction to the ADM, and Domain 4: The Enterprise Continuum and Tools.

Why ADM Phases Dominate the Exam

With 9 of 40 questions, ADM Phases alone can determine whether you pass or fail. This domain requires memorizing the purpose, key inputs, and key outputs of each phase in the Architecture Development Method cycle - Preliminary Phase, Phases A through H, and the continuous Requirements Management process that sits at the center of the cycle.

Candidates frequently underestimate how granular these questions get. It's not enough to know that "Phase B is Business Architecture" - you need to know what artifacts feed into it, what it produces, and how it hands off to Phase C. Combined with Domain 6's 15% weight on ADM Guidelines and Techniques, roughly 38% of the entire exam relates directly to how the ADM operates in practice.

Who Earns OG0-091 and Why Employers Care

OG0-091 is typically pursued by enterprise architects, solutions architects, business analysts, IT consultants, and project managers who work in organizations that have standardized on TOGAF for architecture governance. Government agencies, large financial institutions, and consulting firms frequently list TOGAF 9 Foundation as a baseline requirement or strong preference in job postings, since it signals shared vocabulary across architecture teams.

Because there are no prerequisites, it's also common for early-career professionals to earn OG0-091 as a way to break into architecture-adjacent roles before gaining hands-on project experience. Employers value the credential less as proof of experience and more as proof that a candidate can speak the same architectural language as the rest of the team from day one. For a look at typical roles and postings referencing this credential, see OG0-091 Jobs.

What Passing Actually Gives You

Passing OG0-091 earns the TOGAF 9 Foundation certification. This credential does not expire and carries no renewal or continuing-education requirement - once earned, it stays on your record permanently. Passing also grants partial credit toward TOGAF 9 Certified, the combined credential that requires an additional scenario-based exam covering application of the framework rather than just recall of it.

This structure means OG0-091 is rarely the final destination for serious enterprise architecture practitioners - it's the qualifying step that unlocks the ability to sit the Part 2 exam. Still, TOGAF 9 Foundation alone is a recognized, standalone credential that many job descriptions accept on its own merit.

To weigh whether the time and fee investment make sense for your career goals, read Is the OG0-091 Certification Worth It? Complete ROI Analysis 2026 and OG0-091 Salary Guide 2026: Complete Earnings Analysis for context on how the credential factors into compensation conversations.

Building a Domain-Weighted Study Plan

Because domain weights vary so widely - from 5% up to 22.5% - an effective OG0-091 study plan allocates time proportionally rather than treating all 11 domains equally. A practical approach spreads preparation across several weeks, front-loading the foundational domains before tackling the heavily weighted ADM content.

Practicing under real time pressure matters more for OG0-091 than for exams with generous time allowances, since 60 minutes for 40 questions leaves little room to second-guess answers. A structured walkthrough of this approach, including recommended resources, is available in OG0-091 Study Guide 2026: How to Pass on Your First Attempt. You can also reinforce recall with timed practice questions on our practice test platform, which mirrors the domain weighting described above.

Frequently Asked Questions

For more foundational explanations of terminology and scope, see related guides including What Is OG0-091?, OG0-091 Meaning, What Does OG0-091 Stand For?, and OG0-091 Training - or start practicing directly with sample questions on our OG0-091 practice test site.