Microsoft / Data and analytics
Build applications with Cosmos DB
Bring application development skills, JSON and query experience; this is a developer route, not a SQL administration progression.
Optional foundation
Check your starting knowledge
Use DP-900 to review the basics. You do not need to take this foundation exam to follow our route. If you already know the material, move on.
DP-900 — Azure Data Fundamentals
Core learning · DP-420
Learn the role, one area at a time
Work through the official guide and its learning resources. Use these three study blocks to organize your notes; the official skills outline remains your complete coverage checklist.
- 1.Model documents and choose partition keys
- 2.Integrate SDK operations and distributed data
- 3.Tune throughput, consistency, security and resilience
Hands-on consolidation
Put it into practice
Model an order service with two possible partition keys. Compare queries, transaction boundaries and request-unit cost using synthetic data.
Ready to move on when…
You can justify a partition key and diagnose a hot partition or throttled request.
Use a dedicated lab and synthetic data, never an employer's production environment. Check licensing and costs before provisioning; budget alerts do not stop spending. Remove resources when finished.
Review & exam planning
Find gaps with our DP-420 test
Try the test, explain each missed answer and return to the corresponding learning topic. Repeat the practical task where needed. A practice score is feedback, not proof of certification readiness.
DP-420 — Cloud-Native Apps with Azure Cosmos DB
Before booking, check the official page for current exam availability, any retirement or beta notice, and the credential's full requirements. This guide does not track completion or award a certificate.