Last updated: May 2026. Written by Josh Hutcheson. See our review methodology.
By Josh Hutcheson · E-Learning Specialist
Reviewing online learning platforms since 2019. Review methodology
The 60-second guide: AZ-400 (Microsoft Azure DevOps Engineer Expert) is the senior Azure DevOps cert. $165 USD, 100 minutes, 40-60 questions. Tests advanced CI/CD, IaC, monitoring, and security at Expert level. Hard exam — ~55-60% pass rate. Most candidates need 12-16 weeks of focused prep on top of AZ-104 or AZ-204 prerequisite. Best prep: Microsoft Learn (free, official) + John Savill’s YouTube cram + MeasureUp practice tests. For portfolio depth: the Udacity Cloud DevOps Engineer Nanodegree (Azure variant).
By the numbers (AZ-400):
- ~55-60% first-attempt pass rate — Expert-level cert. Source: r/AzureCertification.
- Senior Azure DevOps Engineers earn $135K-$200K base in US tech hubs (Glassdoor, Apr 2026). Source: glassdoor.com.
- AZ-400 is one of two Microsoft Expert credentials (other is AZ-305 Solutions Architect Expert). Source: learn.microsoft.com.
Risk reversal: Microsoft retake after 24 hours, max 5 attempts/year. FREE annual renewal via Microsoft Learn assessment.
What is AZ-400 (DevOps Engineer Expert)?
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AZ-400 is one of Microsoft’s two Azure Expert credentials (the other being AZ-305 Solutions Architect Expert). It validates senior-level DevOps practice on Azure: advanced Azure DevOps Pipelines, Repos, Boards, complex CI/CD, IaC at scale with Bicep and Terraform, security automation, and the strategic decisions DevOps engineers make at large Microsoft-shop organizations.
It’s NOT for beginners. Microsoft requires AZ-104 OR AZ-204 as prerequisite for the Expert credential, and most successful candidates have 2+ years of Azure DevOps production experience.
Should you pursue AZ-400?
Take it if:
- You’re a senior DevOps engineer with 2-3+ years Azure DevOps production experience.
- You hold AZ-104 or AZ-204 (required prerequisite).
- You target Senior DevOps Engineer, SRE, or Platform Engineer roles at Microsoft-shop companies.
Skip if:
- You’re at Associate-level skill or earlier — pursue AZ-104 or AZ-204 first.
- You target AWS DevOps — pursue AWS DOP-C02 instead.
Exam format
| Detail | AZ-400 |
|---|---|
| Cost | $165 USD |
| Duration | 100 minutes |
| Questions | 40-60 |
| Format | Multiple choice + drag-drop + complex case studies |
| Passing score | 700 / 1000 |
| Prerequisite | AZ-104 OR AZ-204 required for credential |
| Validity | 1 year (FREE annual renewal) |
The 5 exam domains
Domain 1: Configure processes and communications (10-15%)
Azure Boards configuration, sprint planning, project tracking, integration with collaboration tools.
Domain 2: Design and implement source control (15-20%)
Git workflows, Azure Repos branch policies, code review automation, repository design.
Domain 3: Design and implement build and release pipelines (40-45%)
The biggest domain. Azure DevOps Pipelines (YAML + classic), self-hosted vs Microsoft-hosted agents, deployment strategies (blue-green, canary, ring), package management with Azure Artifacts.
Domain 4: Develop a security and compliance plan (10-15%)
Secret management with Azure Key Vault, compliance scanning, dependency vulnerability detection, SAST/DAST integration.
Domain 5: Implement an instrumentation strategy (10-15%)
Application Insights deep dive, Log Analytics queries with KQL, alerting strategies, distributed tracing.
Salary impact
- Senior Azure DevOps Engineer: $135K-$200K base US.
- FAANG/Big Tech with Azure focus: $180K-$260K+ TC.
- Microsoft-shop premium (banking, government): 5-10% above generic equivalent.
Best ways to prepare for AZ-400
#1 (free, official, genuinely best): Microsoft Learn AZ-400 path
Microsoft’s official learning path. Completely free. ~40+ hours of comprehensive content with hands-on labs in real Azure trial environments. For Azure Expert certs specifically, Microsoft Learn is the consensus #1 resource on r/AzureCertification.
#2 (free supplement): John Savill’s AZ-400 study cram (YouTube)
FREE comprehensive YouTube playlist by Microsoft MVP John Savill. ~30+ hours. Covers AZ-400 with alternative angle — useful for shoring up weak domains after Microsoft Learn.
#3 (paid alternative): A Cloud Guru / Pluralsight AZ-400
$35-50/month for ~25-30 hours of focused exam prep. Tim Warner’s course is the most-recommended on Pluralsight.
#4 (essential): Practice tests
Microsoft Official Practice Assessment (free). MeasureUp ($99) for closest exam difficulty. Whizlabs AZ-400 ($19-24) for budget option.
#5 (for portfolio + cert combo): Udacity Cloud DevOps Engineer Nanodegree (Azure variant)
For senior roles, the cert opens doors but the portfolio gets you hired. Udacity Cloud DevOps using Azure Nanodegree (nd082) — intermediate level, 54 hours — covers Azure DevOps Pipelines, Bicep, AKS, monitoring with Application Insights. See our full Cloud DevOps review (covers AWS + Azure variants).
Honest framing: Microsoft Learn is sufficient for AZ-400 exam prep. Udacity is for portfolio depth.
14-16 week study plan
- Weeks 1-2: Verify AZ-104 or AZ-204 prerequisite. Read AZ-400 exam guide.
- Weeks 3-10: Microsoft Learn AZ-400 path systematically.
- Weeks 11-13: John Savill’s YouTube cram for alternative angle.
- Weeks 14-15: Hands-on production-style labs.
- Week 16: Practice tests + exam.
Frequently Asked Questions
How hard is AZ-400?
Hard. Expert-level, scenario-heavy. ~55-60% first-attempt pass rate.
What’s the prerequisite?
AZ-104 OR AZ-204. You must hold one to earn the Expert credential.
How much does AZ-400 cost?
$165 USD for the exam. Total prep: $165 (Microsoft Learn) to $500 with paid courses + practice tests.
Is AZ-400 worth it?
Yes for senior DevOps engineers in Azure-shop environments. Adds $25-35K to median senior offers.
AZ-400 validity?
1 year with FREE annual renewal via Microsoft Learn assessment.
What jobs can I get?
Senior DevOps Engineer (Azure), SRE, Platform Engineer, DevOps Architect. Median: $135K-$200K base + bonus + equity.
Final verdict
AZ-400 is one of Microsoft’s two Expert credentials and a genuine career-impact play for senior DevOps engineers in Microsoft-shop environments. Microsoft Learn (free) is sufficient for exam prep. Add Udacity Cloud DevOps Azure Nanodegree for portfolio depth.
Start AZ-400 prep with Microsoft Learn (free) →
Related guides
Azure cert path: AZ-104 (Administrator) · AZ-204 (Developer) · AZ-305 (Solutions Architect Expert)
Comparison: AWS vs Azure · AWS DevOps (DOP-C02)
Best courses: Udacity Cloud DevOps Engineer Nanodegree (AWS + Azure)
New to Azure? Start with the AZ-900 Azure Fundamentals certification.
Comparing clouds? See our guide to the best cloud certifications (AWS vs Azure vs GCP).