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Microsoft Certified: Azure AI Cloud Developer Associate AI-200 (replaced AZ-204) · Domain 2: Develop AI solutions by using Azure data management services

Choosing the store: Cosmos DB vs PostgreSQL + pgvector vs Redis for a given AI workload

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Last reviewed September 25, 2026 · Leer en español

The exam likes scenario questions that describe an AI workload and ask which data service fits. All three services in this domain can store vectors and answer similarity queries, so the decision turns on everything else: the shape of the data, scale, latency, durability, existing skills and systems, and how the vectors relate to the rest of the application.

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