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DP-420 Microsoft Azure Cosmos DB Developer Specialty
About the Certification
This is a Specialty-level certification focused on designing and developing cloud-native applications using Azure Cosmos DB. It emphasizes proper data modeling, performance optimization, partitioning strategies, indexing, security, and SDK usage for building highly scalable and resilient applications. This certification is the ideal choice for developers who need to work with globally distributed, high-performance data.
Main Curriculum
The curriculum is divided into five main sections
- Data Modeling
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- Choosing the appropriate API :
SQL / MongoDB / Gremlin / Cassandra / Table - Partitioning strategies
- Consistency models
- Request Units (RUs)
- Choosing the appropriate API :
- Azure Integration
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- Azure Functions
- Event Hub / Event Grid
- Azure Kubernetes Service (AKS)
- Microservices integration
- Building Applications with Cosmos DB
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- Creating databases and containers
- Working with SDKs
- Throughput provisioning
- Change feed patterns
Exam Details
- Exam code: DP-420
- Duration: 120 minutes
- Number of questions: 40–60
- Question types: Multiple choice, scenarios, and drag & drop
- Language: English
- Performance Optimization
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- Indexing policies
- Query optimization
- Server-side programming (stored procedures and triggers)
- Monitoring tools
- Passing score: 700 out of 1000
- Exam fee: USD 83–165 (may vary by country and may include taxes)
- Certification Validity This certification is valid for one year, with free annual renewal through Microsoft Learn.
- Security and Protection
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- Fine-grained role-based access control (FRBAC)
- Managed identities
- Network isolation
- Encryption and data governance
Do I need certifications before it ?
No prerequisites are required. However, it is recommended to have a basic understanding of data concepts such as those covered in DP-900, along with development experience using languages such as C#, Java, Python, or Node.js. General familiarity with the Azure platform will also help accelerate learning and improve overall comprehension.
Which certifications are recommended after this one ?
Not mandatory. However, if you are aiming for a strong career path in developing database solutions using Microsoft Azure Cosmos DB especially in data modeling, performance optimization, and building distributed applications the DP-420 Microsoft Azure Cosmos DB Developer Specialty certification is the strongest option.
What are the main career uses of the DP-420 certification ?
- DP-203 — Data Engineer Associate for integrating Cosmos DB into big data pipelines.
- AZ-204 — Azure Developer Associate for deeper cloud application development.
- DP-100 — Data Scientist for integrating data with machine learning workloads.
- AZ-305 — Solutions Architect Expert for advanced architectural design.
Your First Step Toward Distributed Database Development :
This is a powerful certification for any developer. It teaches you how to design and implement Azure Cosmos DB applications efficiently, and opens a strong career path in the world of NoSQL and advanced cloud solutions.
Who is this certification suitable for ?
- Backend or Cloud-Native Application Developers.
- Professionals working with NoSQL databases who want to specialize in Cosmos DB.
- Developers building fast, scalable, globally distributed applications.