- AZ-400 Overview: What This Exam Actually Is
- Who Takes AZ-400 and Why
- Prerequisites and the Expert-Level Requirement
- The Five AZ-400 Domains Explained
- Exam Format, Question Types, and Delivery
- Registration, Pricing, and Scheduling
- Scoring, Passing, and Renewal
- How to Prepare Without Wasting Time
- Frequently Asked Questions
- AZ-400 is the qualifying exam for Microsoft Certified: DevOps Engineer Expert, an expert-level credential.
- You must already hold Azure Administrator Associate or Azure Developer Associate before AZ-400 counts toward certification.
- Build and release pipelines make up 50-55% of the exam - the single largest domain by far.
- The U.S. exam price is commonly listed at $165 USD, confirmed at scheduling through Pearson VUE.
AZ-400 Overview: What This Exam Actually Is
AZ-400 is Microsoft's exam for validating advanced DevOps skills across Azure, GitHub, and Azure DevOps. It's governed directly by Microsoft Corporation and delivered through Pearson VUE, either at a physical test center or via online proctoring. Passing AZ-400 is the technical gateway to earning Microsoft Certified: DevOps Engineer Expert - but passing the exam alone isn't enough, which is a detail a lot of candidates miss until they're already deep into study mode.
If you're trying to understand the credential itself rather than just the exam mechanics, our companion piece on AZ-400 Certification breaks down the full certification structure, and AZ-400 Meaning covers what the naming convention and exam code actually signify inside Microsoft's certification taxonomy.
Who Takes AZ-400 and Why
AZ-400 attracts a specific type of candidate: engineers who are already administering or developing in Azure and want to formalize their DevOps toolchain expertise across GitHub and Azure DevOps. Typical candidates include:
- Cloud administrators moving into release engineering or platform engineering roles
- Software developers who own CI/CD pipelines for their teams
- Site reliability engineers responsible for deployment safety and monitoring
- Infrastructure engineers implementing Infrastructure as Code (IaC) at scale
Employers hiring for DevOps engineer, platform engineer, release manager, and cloud engineer roles frequently list this credential as preferred or required. If you want a sense of where this certification actually shows up in job postings, see AZ-400 Jobs, and for a broader compensation view, AZ-400 Salary Guide 2026: Complete Earnings Analysis covers earnings context without relying on inflated or unverifiable claims.
Prerequisites and the Expert-Level Requirement
This is the part of AZ-400 that trips people up: passing the exam is only half the requirement. To actually earn Microsoft Certified: DevOps Engineer Expert, you must also hold one of these associate certifications:
- Microsoft Certified: Azure Administrator Associate (AZ-104), or
- Microsoft Certified: Azure Developer Associate (AZ-204)
Microsoft expects candidates to already have real-world experience administering and developing in Azure, plus practical experience implementing GitHub and Azure DevOps solutions. This isn't a certification you should attempt as your first Azure credential - the exam content assumes you're already comfortable with Azure resource management and application development concepts.
Key Takeaway
If you don't yet hold AZ-104 or AZ-204, earn one of those first. AZ-400 will not produce the Expert certification on its own, regardless of your score.
The Five AZ-400 Domains Explained
AZ-400's skills-measured outline is organized into five domains, and the weighting between them is heavily skewed. Understanding this weighting is more important for AZ-400 than for almost any other Microsoft exam, because one domain dominates everything else.
Domain 1: Design and implement processes and communications (10-15%)
Covers Agile/DevOps culture, work item tracking, communication strategy, and team collaboration practices inside Azure DevOps and GitHub.
- Boards, backlogs, and sprint planning integration
Domain 2: Design and implement a source control strategy (10-15%)
Covers branching strategies, Git workflows, repository structure, and migration between source control systems.
- Trunk-based development vs. GitFlow tradeoffs
Domain 3: Design and implement build and release pipelines (50-55%)
This is the dominant domain and where the majority of your study time belongs. It covers YAML pipelines, GitHub Actions, Azure Pipelines, deployment strategies (blue-green, canary, rolling), package management, testing integration, approval gates, Infrastructure as Code, and long-term pipeline maintenance.
- YAML pipeline authoring and reuse via templates
- Deployment strategy selection for different release risk profiles
- Gate configuration and release approvals
Domain 4: Develop a security and compliance plan (10-15%)
Covers secrets management, security scanning integration, compliance policy enforcement, and governance across the DevOps lifecycle.
- Integrating security scanning tools into pipelines
Domain 5: Implement an instrumentation strategy (5-10%)
Covers monitoring, logging, and telemetry design so teams can detect and respond to issues in production.
- Application Insights and alerting configuration
Because Domain 3 alone accounts for roughly half the exam, your prep plan should not treat all five domains equally. For a domain-by-domain breakdown with study priorities, read AZ-400 Exam Domains 2026: Complete Guide to All 5 Content Areas. We've also published standalone deep dives for the individual domains: Domain 1, Domain 2, Domain 3, and Domain 4.
| Domain | Weight | Study Priority |
|---|---|---|
| 1. Processes and communications | 10-15% | Low-medium |
| 2. Source control strategy | 10-15% | Medium |
| 3. Build and release pipelines | 50-55% | Highest - majority of study time |
| 4. Security and compliance plan | 10-15% | Medium |
| 5. Instrumentation strategy | 5-10% | Lowest, but not skippable |
Exam Format, Question Types, and Delivery
Microsoft does not publish an exact question count or a single fixed duration for every AZ-400 delivery - the specific time allotted is shown to you during scheduling and again at exam launch, so don't rely on secondhand numbers you find in forums. What is consistent across Microsoft's expert-level exams, including AZ-400, is the style of questions you'll encounter:
- Scenario-based multiple choice and multiple response items
- Drag-and-drop and build-list sequencing questions
- Hot area (click-to-select-region) questions
- Case studies requiring you to read a scenario and answer multiple related questions
- Lab-style or performance-based tasks in some deliveries
These aren't trivia questions. Most items describe a business or technical scenario - an organization migrating repos, a team struggling with flaky deployments, a security team requiring gated approvals - and ask you to choose the best implementation. That format rewards practical, hands-on familiarity with Azure DevOps and GitHub far more than memorized definitions. For a realistic sense of how tough this actually feels in practice, see How Hard Is the AZ-400 Exam? Complete Difficulty Guide 2026.
Registration, Pricing, and Scheduling
AZ-400 is scheduled through Pearson VUE. Pricing depends on the country or region where you sit the exam - in the United States, the price is commonly listed at $165 USD, but Microsoft confirms final pricing during the actual scheduling process, and it can change. Don't assume a price you saw months ago is still current; check it at checkout.
For a full breakdown of what you're actually paying for - the exam fee itself plus any training, retake, or renewal costs - see AZ-400 Certification Cost 2026: Complete Pricing Breakdown.
Registration mechanics to keep in mind:
- You choose between test-center delivery and online proctoring at scheduling time
- Exam security rules apply identically to both formats
- Accommodations must be requested before scheduling if you need them
- Some current exam policies may include Microsoft Learn access tied to your exam registration - verify what applies at the time you book
Scoring, Passing, and Renewal
AZ-400 uses a scaled score rather than a raw percentage, and the passing score is 700. Scaled scoring means the reported number isn't simply "percentage of questions correct" - different exam forms are calibrated so a 700 represents the same competency bar regardless of which specific questions you received.
Once you pass AZ-400 and hold the required associate prerequisite, you earn Microsoft Certified: DevOps Engineer Expert. Like other Microsoft role-based and expert certifications, this credential expires annually. Renewal doesn't require retaking the full exam - you pass a free online renewal assessment through Microsoft Learn before the expiration date. Missing that window means the certification lapses, so it's worth calendaring the renewal date the moment you pass.
Key Takeaway
Passing score is 700 on a scaled basis. Certification lasts one year and renews for free via a Microsoft Learn assessment - no need to resit the full AZ-400 exam annually.
How to Prepare Without Wasting Time
Given that Domain 3 (build and release pipelines) covers 50-55% of the exam, your prep schedule should be lopsided on purpose. A common mistake is spreading study time evenly across all five domains - that approach under-prepares you for the domain that decides the outcome most often.
Pipelines First
- Build and author YAML pipelines in Azure Pipelines from scratch
- Configure GitHub Actions workflows and compare them to Azure Pipelines equivalents
- Practice deployment strategies: blue-green, canary, and rolling deployments
Source Control and Process
- Work through branching strategies and repo migration scenarios (Domain 2)
- Review Agile process and work-item tracking configuration (Domain 1)
Security, Compliance, and Monitoring
- Configure secrets management and pipeline security scanning (Domain 4)
- Set up instrumentation and alerting with Application Insights (Domain 5)
- Take timed practice exams focused on case-study style scenarios
For a more detailed week-by-week plan with resource recommendations, see AZ-400 Study Guide 2026: How to Pass on Your First Attempt. And once you've built a study plan, running full-length scenario-based practice tests on our practice test platform is the fastest way to confirm you can actually apply the pipeline concepts under exam conditions rather than just recognize them on flashcards.
If you're still deciding whether this certification is worth the time investment relative to your career goals, Is the AZ-400 Certification Worth It? Complete ROI Analysis 2026 lays out the tradeoffs honestly. And if you want structured coursework rather than self-study, AZ-400 Training covers the available training paths.
Frequently Asked Questions
AZ-400 is Microsoft's exam code for "Designing and Implementing Microsoft DevOps Solutions." For more on the naming convention itself, see What Does AZ-400 Stand For?
You can take the AZ-400 exam without holding another certification first, but you won't earn Microsoft Certified: DevOps Engineer Expert until you also hold Azure Administrator Associate or Azure Developer Associate.
Microsoft does not publish a fixed question count or duration for every delivery. The exact number and time allotted are shown to you during scheduling and at exam launch.
Pricing depends on the country or region where you take the exam. In the U.S., the exam is commonly listed at $165 USD, though final pricing is confirmed during scheduling and can change.
It expires annually. You renew for free by passing an online renewal assessment on Microsoft Learn before the expiration date - no need to retake AZ-400 itself.
For a deeper explanation of the certification's meaning and terminology, see What Is AZ-400 Certification?, What Is A AZ-400?, or What Does AZ-400 Mean? And when you're ready to test your readiness under realistic conditions, our AZ-400 practice exams mirror the scenario-based format you'll see on exam day.