Apache Ossie (Incubating): The New Name for Open Semantic Interchange
| Source: Snowflake Blog
Tags: Apache Ossie, semantic layer, data standards, Snowflake, AI agents, data mesh, open-source
Open Semantic Interchange has been accepted into the Apache Incubator as Apache Ossie — a vendor-neutral YAML-based spec for encoding business metrics, dimensions, and relationships so that BI tools, query engines, and AI agents all share consistent definitions across an organization's data stack.
Details
The project formerly known as Open Semantic Interchange (OSI) has been renamed Apache Ossie and accepted into the Apache Software Foundation's Incubator — a governance milestone that ensures no single vendor controls the specification. The rename was driven by confusion with other OSI-acronym projects; the specification itself is unchanged. Ossie addresses a persistent data quality problem: the same business concept (say, 'Monthly Active Users') ends up defined differently across CRM, data warehouse, and BI systems, leading to inconsistent analysis. The spec defines a YAML-based format for encoding metrics, dimensions, and their relationships — along with broader business logic — in a machine-readable, portable way. The AI angle is direct: agents querying or reasoning over business data through Ossie get the same contextual grounding a human analyst would have, not just raw numbers. This is relevant to enterprise AI deployments where metric accuracy and consistency are critical. Any tool — whether a BI platform, a query engine, or an LLM-powered agent — can consume or produce Ossie-compliant definitions without loss of meaning. The project has 50+ contributors with Snowflake as a primary backer. Apache incubation typically takes one to three years before graduation, so the spec is still maturing. But vendor-neutral governance is now in place.