Certification

Microsoft Certified: Azure Cosmos DB AI Developer Associate

Write efficient queries, create indexing policies, manage, and provision resources in the SQL API and SDK with Microsoft Azure Cosmos DB.

At a glance

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Overview

As an Azure Cosmos DB Developer Associate, you design, build, and optimize cost effective high-performance scalable applications that use Azure Cosmos DB including system of record for agent memory, conversation state, retrieval indexes, grounding data, and application data.

Your responsibilities include:

  • Designing and implementing data models and data distribution
  • Ingesting and querying data with Azure Cosmos DB database
  • Optimizing application performance, scalability, and cost
  • Implementing secure and production-ready applications
  • Building AI retrieval and RAG solutions
  • Designing and implementing agent memory systems
  • Integration of Azure Cosmos DB with Microsoft Fabric for analytical querying and operational insights

In this role, you collaborate with AI engineers, application developers, solution architects, data engineers, and security professionals to design and implement cost effective high-performance scalable applications.

You should have experience developing applications by using C# or Python. You should be familiar with Azure services, generative AI concepts, retrieval-based systems, and application development practices.

Note

We updated the certification’s name and level to reflect the evolving role of Azure Cosmos DB developers. The updated certification became Microsoft Certified: Azure Cosmos DB AI Developer Associate. This change went into effect on October 6, 2026. No action is required. Learn more.

Skills earned upon completion

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Practice Assessment

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Exam Sandbox

Experience demo

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You will have 100 minutes to complete this assessment.

Exam policy

This exam will be proctored. You may have interactive components to complete as part of this exam. To learn more about exam duration and experience, visit: Exam duration and exam experience.

If you fail a certification exam, don’t worry. You can retake it 24 hours after the first attempt. For subsequent retakes, the amount of time varies. For full details, visit: Exam retake policy.

Assessed on this exam

  • Design and develop database solutions
  • Secure, optimize, and deploy database solutions
  • Implement AI and Analytics capabilities in database solutions

Need accommodations?

We offer a variety of accommodations to support you.

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This exam is offered in the following languages:

English, Japanese, Chinese (Simplified), Korean, German, French, Spanish, Portuguese (Brazil), Chinese (Traditional), Italian

Schedule through Pearson Vue

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We strongly recommend that you register for an exam with a personal MSA account. If you register with an organizational (work/school) AAD account, your exam records will be lost if you leave your organization and they will be unrecoverable.

 

Price based on the country or region in which the exam is proctored.

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Certification resources

Exam DP-420 study guide

Focus your studies as you prepare for the exam. Review the study guide to learn about the topics the exam covers, updates, and additional resources.

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