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Building Azure DocumentDB on Open-Source Foundations | OD821

Microsoft Developer (Build) · Jun 03, 2026 · Engineering Insights

Microsoft built Azure DocumentDB by open-sourcing its managed MongoDB-compatible, Postgres-backed engine and feeding learnings back into the service.

“we started with a managed service, went back into building an open source engine from the managed service, but then funneled all of our open-source learnings from the project back into the managed service”

An Azure DocumentDB product manager described the team's roughly 18-month journey of open-sourcing their managed, MongoDB-compatible, Postgres-backed NoSQL database and reincorporating community learnings into the managed service. The talk is a database engineering and open-source strategy story with no meaningful AI-specific signal.

azure-documentdb open-source database mongodb-compatible postgres

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