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Code with Cosmos: Building AI Applications with Azure Cosmos DB

Microsoft Developer (Build) · Oct 22, 2026 · Product Launches

Azure Cosmos DB unifies vector, full-text, and transactional data in one system for AI apps

“That really is the gap between an app that finds you similar things, and an app that actually helps you decide things and get it done.”

Microsoft's Azure Cosmos DB team demonstrates combining vector search, full-text search, and transactional queries in a single database for AI travel planning apps. The pitch is eliminating the common architecture pattern of a separate vector store synced to an operational database, reducing infrastructure complexity. This is a product marketing episode in a developer series, not a major announcement, but it signals Microsoft's push to position Cosmos DB as an all-in-one AI application backend.

azure-cosmos-db vector-search hybrid-search rag microsoft ai-infrastructure database

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