Free AZ-400 practice exams are the fastest way to check whether you are ready for the Microsoft Azure DevOps Engineer Expert certification. AZ-400 is a scenario-heavy, cross-service exam that stitches together Azure Pipelines, GitHub Actions, Azure Repos, Application Insights, and infrastructure-as-code, so seeing realistic questions in advance helps you identify which pieces you already understand and which ones still need work before exam day.
What AZ-400 covers
The AZ-400 exam tests five official domains. Design and implement build and release pipelines (50 to 55 percent) covers YAML multi-stage pipelines, environments, approvals, gates, deployment strategies (blue-green, canary, rolling), agents and pools, templates, container and AKS deployments, Bicep and Terraform integration, and Azure Artifacts. Develop a security and compliance plan (10 to 15 percent) covers workload identity federation, Key Vault-backed variable groups, GitHub Advanced Security, secret scanning, dependency scanning, container image signing, and audit-grade approvals. Design and implement processes and communications (10 to 15 percent) covers Azure Boards process templates, DORA metrics, ChatOps, Kanban and Scrum practices, and blameless post-mortems. Design and implement a source control strategy (10 to 15 percent) covers trunk-based development, branch policies, pull-request review, Git LFS, and monorepo strategies. Implement an instrumentation strategy (5 to 10 percent) covers Application Insights, KQL, Log Analytics, alerts, action groups, and OpenTelemetry. The exam runs for 100 minutes with roughly 40 to 60 questions and a 700/1000 passing score.
What's in these practice exams
These free Microsoft AZ-400 practice questions cover all five domains weighted to match the real exam:
- Build and release pipelines (YAML, environments, approvals, gates, canary and blue-green, AKS/App Service/Container Apps/Functions/Static Web Apps, Bicep, Terraform, Helm)
- Security and compliance (workload identity federation, Key Vault, GHAS, CodeQL, Dependabot, image signing, Defender for DevOps, ephemeral scale-set agents)
- Processes and communications (Agile/Scrum/Kanban, DORA metrics, ChatOps, work-item queries, code wikis, blameless post-mortems)
- Source control strategy (trunk-based development, branch policies, PR review, Git LFS, sparse checkout, Conventional Commits, TFVC-to-Git migration)
- Instrumentation strategy (Application Insights, KQL, dependencies vs requests, Container Insights, workbooks, action groups, SLI/SLO, OpenTelemetry)
The first set is completely free with no signup. The remaining 24 sets unlock premium features like score tracking, weak-area analytics, and timed mode that mirrors the real 100-minute exam length.
How to use these effectively
Start with the free set to establish a baseline and identify which domain hits you hardest. Because pipelines is half the exam, expect roughly ten of the twenty questions per set to focus on YAML pipelines, environments, and release strategies. Read every explanation, not just the ones you got wrong, because the rationales call out the recurring service-to-scenario mappings that AZ-400 loves to test, like "workload identity federation over client secret" or "environment approval over gate for a human decision" or "canary for percentage-based traffic shift versus rolling for batched instance updates." Once you have studied weaker areas, mix sets instead of drilling one domain at a time, because the real exam alternates between pipelines, security, source control, and observability inside a single sitting. Aim for 80 percent or higher across multiple sets before booking the real exam, because case studies in AZ-400 chain several questions off a single scenario and a shaky mental model of Azure DevOps and GitHub features loses several marks fast.