Q3 Cosmos DB Domain 2 · 25–30% of exam

Which Cosmos DB API is recommended for storing and querying AI embeddings using vector search?

  1. A Cosmos DB for MongoDB
  2. B Cosmos DB for NoSQL with DiskANN vector index (correct answer)
  3. C Cosmos DB for Cassandra
  4. D Cosmos DB for Table

Shortcut: Cosmos DB for NoSQL supports DiskANN-based vector indexing for efficient approximate nearest neighbour (ANN) search, ideal for storing and querying AI embeddings alongside structured data.