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Implementing Microsoft Azure Cosmos DB Solutions

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Skills measured

This exam measures your ability to accomplish the technical tasks listed below. The percentages indicate the relative weight of each major topic area on the exam. The higher the percentage, the more questions you are likely to see on that content area on the exam. View video tutorials about the variety of question types on Microsoft exams.

Please note that the questions may test on, but will not be limited to, the topics described in the bulleted text.

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Partition and Model Data
  • Plan a partitioning strategy
    • Select a partition key for a container; differentiate between partition keys and partition key ranges; partition data across multiple containers; calculate throughput distribution across partition key ranges; control cross-partition queries; plan for transactions
  • Model data based on business use cases
    • Identify when to co-locate data within the same container or across multiple containers; identify when to co-locate data within the same partition key or across multiple partition keys; identify when to co-locate data within the same document or across multiple documents; share properties between documents
Replicate Data Across the World
  • Implement global distribution and high availability
    • Replicate data to additional regions; define automatic failover policies for disaster recovery; perform manual failovers to change the write region; set the preferred location of applications for low-latency access; design patterns for multi-write regions; resolve conflicts surfaced by the conflict feed
  • Select a data consistency approach based on business use cases
    • Identify use cases for consistencies; differentiate between consistencies by using characteristics; differentiate between consistencies by using trade-offs between performance and consistency; use session tokens
Tune and Debug Azure Cosmos DB Solutions
  • Estimate and provision request units
    • Differentiate requests and request units; retrieve request unit cost of an operation; estimate request unit allocation for a container; tune throughput for uneven workloads and manage throttling; monitor Azure portal metrics; recommend solutions based on query metrics
  • Tune container settings
    • Manage lifecycle of data by using TTL; tune an index policy; include and exclude properties from index paths
  • Implement security
    • Secure access to data; rotate keys; understand encryption at rest and in transit; configure IP firewalls; create and manage users; configure fine-grained access to resources
  • Debug a Cosmos DB solution
    • Configure diagnostic logging; recommend solutions based on data retrieved from logs; evaluate response status code categories; throttle; review metrics and performance tips
Perform Integration and Develop Solutions
  • Develop applications with the SQL API
    • Optimize SDK and concurrency control; Tune request options for CRUD and queries; examine response headers; implement optimistic concurrency control with ETAG; query geospatial data; use advanced SQL query operators for complex documents (nested objects and arrays); perform intra-document JOINs; perform SQL queries; implement user-defined functions; use multi-record transactions with stored procedures; implement a continuation model for bounded execution with stored procedures; implement server-side logic and transactions
  • Migrate from MongoDB to MongoDB API in Cosmos DB
    • Choose appropriate tools to migrate data; transfer data
  • Implement event-driven applications by using Azure functions, triggers and Cosmos DB change feed
    • Use Cosmos DB triggers for Azure functions; change feed mechanics
  • Analyze Cosmos DB data with Apache Spark connector
    • Set up and configure a Cosmos DB Spark connector; push down predicates

Who should take this exam?

Candidates for this exam are developers and architects who leverage Azure Cosmos DB. Candidates should understand fundamental concepts of partitioning, replication, and resource governance for building and configuring scalable applications that are agnostic of a Cosmos DB API. Candidates should also have basic working knowledge of the Cosmos DB SQL API.

Candidates for this exam design, build, and troubleshoot Cosmos DB solutions that meet business and technical requirements.

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Preparing for an exam

We recommend that you review this exam preparation guide in its entirety and familiarize yourself with the resources on this website before you schedule your exam. See the Microsoft Certification exam overview for information about registration, videos of typical exam question formats, and other preparation resources. For information on exam policies and scoring, see the Microsoft Certification exam policies and FAQs.


This preparation guide is subject to change at any time without prior notice and at the sole discretion of Microsoft. Microsoft exams might include adaptive testing technology and simulation items. Microsoft does not identify the format in which exams are presented. Please use this preparation guide to prepare for the exam, regardless of its format. To help you prepare for this exam, Microsoft recommends that you have hands-on experience with the product and that you use the specified training resources. These training resources do not necessarily cover all topics listed in the "Skills measured" section.

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