- AZ-400 is Microsoft's exam code for "Designing and Implementing Microsoft DevOps Solutions."
- Passing AZ-400 plus holding an Azure Administrator or Azure Developer Associate badge earns the Expert title.
- Domain 3, build and release pipelines, is 50-55% of the exam and should get half your prep time.
- Passing score is 700, scored on a scaled system, not raw percentage correct.
What AZ-400 Literally Means
AZ-400 is a code, not an acronym. Microsoft assigns "AZ" prefixes to Azure-track exams, and "400" signals an expert-level difficulty tier within Microsoft's numbering system (100s are fundamentals, 200s-300s are associate-level, 400s are expert-level or specialized). The full official title is "Designing and Implementing Microsoft DevOps Solutions." When people ask what AZ-400 means, they're really asking two different things: what the code stands for, and what earning it signifies professionally. This article answers both, and if you want the plain-language version of the first question, see AZ-400 Meaning or the closely related breakdown at What Does AZ-400 Stand For?
Passing AZ-400 is the exam requirement for the Microsoft Certified: DevOps Engineer Expert credential, governed and issued by Microsoft Corporation. It's delivered exclusively through Pearson VUE, either at a physical test center or via online proctoring, so the exam code and the certification name are distinct but tightly linked concepts worth separating in your head before you start studying.
What the Exam Actually Tests
AZ-400 measures whether a candidate can design and operate DevOps practices across the full Azure and GitHub ecosystem - not just write pipeline YAML. Microsoft builds the exam around scenario-based items rather than pure recall, and question formats commonly include multiple choice, multiple response, drag and drop, build list, hot area, case studies, and lab-style tasks. There's no single fixed question count or duration published for every delivery; your specific exam length and item count are shown during scheduling and again at exam launch, so don't rely on secondhand numbers you find in forums.
The passing score is 700, reported as a scaled score rather than the percentage of questions you answered correctly. That distinction matters: different question weights and item difficulty feed into the scale, so you can't simply calculate "70% correct = pass." For a deeper breakdown of how the exam experience actually plays out under test conditions, read How Hard Is the AZ-400 Exam? Complete Difficulty Guide 2026.
The Five Domains Behind the Name
What AZ-400 "means" in practice is defined by its five skills-measured domains. These are the load-bearing walls of the exam, and Microsoft weights them unevenly - which should directly shape your prep plan.
Domain 1: Design and implement processes and communications (10-15%)
Covers DevOps culture, communication planning, work item tracking, and process design decisions that connect teams to delivery outcomes.
- Choosing the right project management and communication tooling for a DevOps transformation
Domain 2: Design and implement a source control strategy (10-15%)
Focuses on branching strategies, repository structure, and migrating or integrating source control across Azure Repos and GitHub.
- Trunk-based vs. GitFlow tradeoffs and when to enforce branch policies
Domain 3: Design and implement build and release pipelines (50-55%)
The dominant domain by a wide margin. It spans YAML pipelines, GitHub Actions, Azure Pipelines, deployment strategies, package management, testing integration, release gates, infrastructure as code, and pipeline maintenance.
- This single domain outweighs the other four combined - treat it that way in your schedule
Domain 4: Develop a security and compliance plan (10-15%)
Tests secure supply chain practices, secrets management, compliance scanning, and governance controls baked into pipelines.
- Integrating security scanning tools and managing service connections safely
Domain 5: Implement an instrumentation strategy (5-10%)
Covers monitoring, telemetry, and feedback loops that close the DevOps cycle after release.
- Configuring Application Insights and interpreting collected telemetry to drive changes
For a full breakdown of every skill inside each domain, including subtopics Microsoft doesn't spell out in the exam summary, see AZ-400 Exam Domains 2026: Complete Guide to All 5 Content Areas. If you'd rather go domain-by-domain in dedicated study guides, start with Domain 1, move through Domain 2, spend the bulk of your time on Domain 3, and close with Domain 4.
Why AZ-400 Isn't a Standalone Exam
Here's a detail that trips up a lot of candidates: passing AZ-400 alone does not grant you the Expert certification. Microsoft requires you to also hold either Microsoft Certified: Azure Administrator Associate or Microsoft Certified: Azure Developer Associate before AZ-400 completes your Expert badge. That means the "meaning" of AZ-400 is inherently tied to a prior credential - it's designed as a capstone exam layered on top of foundational Azure competency, not an entry point.
Microsoft expects candidates approaching AZ-400 to already have real experience administering and developing in Azure, plus hands-on exposure implementing GitHub and Azure DevOps solutions. This isn't a theoretical checkbox - the scenario-based questions assume you've configured pipelines, managed repos, and troubleshot deployments before, not just read about them. If you're unclear on how this exam fits into Microsoft's broader certification structure, What Is AZ-400? and AZ-400 Certification both walk through the positioning in more detail.
Registration, Delivery, and Fee Mechanics
AZ-400 is scheduled and delivered through Pearson VUE, with two delivery paths: an in-person test center or online proctoring from a controlled environment. Pricing depends on the country or region where you sit the exam. In the United States, the commonly listed price is $165 USD, but Microsoft confirms final pricing during the scheduling process itself, and it can change - so treat any number you read, including this one, as a starting reference rather than a guarantee.
Because there's no universally fixed duration or question count published, the actual time allotted and number of items appear when you schedule and again when the exam launches. Budget your test-day time flexibly rather than memorizing a specific "you have X minutes for Y questions" figure from an outdated source. For the complete cost picture - including retake considerations and what's not included in the base fee - see AZ-400 Certification Cost 2026: Complete Pricing Breakdown.
| Exam Attribute | Detail |
|---|---|
| Testing provider | Pearson VUE (test center or online proctored) |
| Passing score | 700 (scaled score) |
| U.S. price | $165 USD (region-dependent, confirmed at scheduling) |
| Question formats | Multiple choice, multiple response, drag and drop, build list, hot area, case studies, labs |
| Prerequisite | Azure Administrator Associate OR Azure Developer Associate |
| Renewal | Annual, free via Microsoft Learn assessment |
Who Actually Earns This Certification
Because AZ-400 sits on top of an associate-level Azure credential and requires practical DevOps and GitHub experience, it tends to attract people already working in roles like DevOps engineer, release manager, cloud infrastructure engineer, or senior developer moving into platform ownership. It's not typically a first certification - it's a signal that someone has moved past basic Azure administration into designing pipelines, governance, and delivery systems at scale.
If you're evaluating whether this certification lines up with your career goals, two resources are worth reading before you commit exam time and money: AZ-400 Salary Guide 2026: Complete Earnings Analysis for compensation context, and Is the AZ-400 Certification Worth It? Complete ROI Analysis 2026 for a broader return-on-investment view. For current job market framing, AZ-400 Jobs covers the kinds of postings that reference this credential directly.
Key Takeaway
Don't attempt AZ-400 as your first Microsoft certification. Secure the Azure Administrator or Azure Developer Associate credential first, and make sure you've actually built pipelines in Azure DevOps or GitHub Actions before scheduling.
Mapping Study Time to the Naming Weight
Since Domain 3 (build and release pipelines) makes up 50-55% of the exam, your study calendar should mirror that imbalance rather than splitting time evenly across five domains. A distorted study plan that gives each domain "equal attention" is a common mistake that directly contradicts how AZ-400 is weighted.
Foundational Domains
- Cover Domain 1 (processes/communications) and Domain 2 (source control strategy) together since both sit at 10-15%
Domain 3 Deep Dive
- Build actual YAML pipelines, configure GitHub Actions workflows, practice deployment strategies, IaC templates, and gate configurations hands-on
Security and Instrumentation
- Work through Domain 4 security/compliance scenarios, then Domain 5 monitoring and telemetry setup
Integration and Practice Exams
- Run full-length practice tests that mix all five domains, review weak areas, and re-test Domain 3 scenarios specifically
This isn't a generic weekly template - it's built directly from the published domain weights. For a more complete walkthrough of pacing, resource selection, and how to sequence hands-on labs against reading, see AZ-400 Study Guide 2026: How to Pass on Your First Attempt. And if you want a realistic gut-check on how challenging this exam feels compared to other Azure certifications before you lock in a timeline, AZ-400 Pass Rate 2026: What the Data Shows covers what's publicly known.
Whatever your study path, running full-length simulations under timed conditions on our practice test platform is one of the few ways to feel the scenario-based question style before exam day rather than guessing at it. Because Domain 3 dominates the exam, prioritize practice questions weighted toward pipelines and releases, then use the practice tests to confirm you can apply IaC and deployment strategy concepts under time pressure, not just recognize them.
What Happens After You Pass
Microsoft Certified: DevOps Engineer Expert, like other Microsoft role-based and expert certifications, expires annually. Renewal doesn't require retaking the full AZ-400 exam - instead, Microsoft offers a free online renewal assessment through Microsoft Learn before your certification lapses. This keeps the credential current with whatever domain weighting and tooling changes Microsoft has made since your original exam date, which matters given how frequently Azure DevOps and GitHub Actions features evolve.
Special exam-day conditions also carry into how you experience the process: expect strict proctoring rules whether you test online or in person, standard Microsoft accommodations policies for candidates who need them, and score reporting delivered as a scaled number rather than a raw percentage - the same 700-point passing threshold applies at renewal time as well.
If any of this terminology still feels unclear - the difference between the exam code, the certification name, and the underlying skills - the companion pieces What Is A AZ-400? and What Is AZ-400 Certification? approach the same question from different angles and are worth reading alongside this one. For structured preparation resources beyond self-study, AZ-400 Training outlines available course formats.
Frequently Asked Questions
No. AZ-400 is a Microsoft exam code, not an acronym. "AZ" denotes the Azure exam track and "400" denotes expert-level difficulty. The exam's full title is "Designing and Implementing Microsoft DevOps Solutions."
You can register and sit the exam, but passing it alone won't earn you the Microsoft Certified: DevOps Engineer Expert title. You also need Microsoft Certified: Azure Administrator Associate or Microsoft Certified: Azure Developer Associate.
Microsoft does not publish a fixed question count for every delivery. The exact number of items and time allotted are displayed during scheduling and again at exam launch.
Design and implement build and release pipelines makes up 50-55% of the exam content, far more than any other domain. Study time should be allocated proportionally, with heavy focus on YAML pipelines, GitHub Actions, deployment strategies, and IaC.
No. Microsoft Certified: DevOps Engineer Expert expires annually. It can be renewed at no cost by passing an online renewal assessment through Microsoft Learn before expiration.