English AZ-400: Microsoft DevOps Engineer Expert Certification Guide

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This guide explains the AZ-400 Microsoft certification in plain English. It is written for learners who want to understand where the credential fits before choosing a study path.

Important: This is an independent reference guide, not a Microsoft page. Credential names, exam codes, availability, retirement dates, pricing, languages, registration rules, and policies may change. Confirm details on Microsoft Learn before registering.

In this guide

1. What is AZ-400
2. Quick exam facts
3. Who this certification is for
4. Main knowledge areas
5. How to prepare
6. Where this fits in the Microsoft path
7. Prep resources and references

1. What is AZ-400

Microsoft DevOps Engineer Expert is a Expert-level Microsoft credential in the area of DevOps. It is part of the Azure developer and DevOps track in this LoSimplifica guide.

2. Quick exam facts

3. Who this certification is for

This certification is most relevant for DevOps engineers, platform engineers, release engineers, cloud developers, and automation specialists.

4. Main knowledge areas

Use the following list as a planning summary, then compare it with the current Microsoft Learn study guide before registering.

• source control
• CI/CD
• infrastructure as code
• security
• monitoring
• feedback loops
• and delivery practices

5. How to prepare

For an Expert-level exam, focus on architecture tradeoffs, governance, reliability, security, cross-service design, and senior decision-making. You should be able to compare options, justify designs, and recognize risks across a full solution.

Official preparation links

• Official Microsoft Learn certification page
• Official Microsoft Learn study guide
• Training modules and Schedule exam area on the official page

Video walkthroughs (Exam Readiness Zone)

Official Microsoft video series covering this exam, episode by episode. Videos are in English.

• Part 1: Preparing for AZ-400 - Design and implement processes and communications (Part 1 of 5)
• Part 2: Preparing for AZ-400 - Design and implement a source control strategy (Part 2 of 5)
• Part 3: Preparing for AZ-400 - Design and implement build and release pipelines (Part 3 of 5)
• Part 4: Preparing for AZ-400 - Develop a security and compliance plan (Part 4 of 5)
• Part 5: Preparing for AZ-400 - Implement an instrumentation strategy (Part 5 of 5)

6. Where this fits in the Microsoft path

Best for practitioners responsible for reliable software delivery on Microsoft and Azure platforms.

7. Prep resources and references

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