Azure / Associate / DP-420
Azure Cosmos DB AI Developer Associate
Model partitions, control RU cost and build secure retrieval and agent-memory applications on Cosmos DB.
This guide follows the refreshed Cosmos DB AI Developer scope, including vector/full-text retrieval, agent memory and Fabric integration. Older DP-420 outlines omit some of these areas.
THE REVISION PATH
Your topics, in order.
Read. Recall. Explain the alternative.
Resource model, consistency and partitioning
Good keys spread writes and target reads.
SDK operations, change feed and concurrency
Point read cheaply; retry safely; process changes twice safely.
Secure, distribute and recover data
Identity plus network; replicas plus history.
RU efficiency, diagnostics and fleets
Measure per request and per partition.
Vector retrieval, agent memory and Fabric
Retrieve with permissions; remember with boundaries.
How this guide is organised
Original refresher notes mapped to the published objective groups. Primary product documentation supports the explanations. Use the memory hooks, compare the alternatives, then answer the original recall scenarios without looking. These condensed notes accompany hands-on practice and the full official skills list.
- Official exam guide ↗ Scope authority
Revision material supports preparation; it does not guarantee every possible exam question. Check the exam version and official objectives before booking.