Airbyte is an open-source data integration platform that moves data from 600+ sources into warehouses, lakes, and databases via ELT pipelines, running as managed cloud or self-hosted on Kubernetes. It has expanded into AI agent tooling with a Context Store and MCP Gateway that give agents structured, queryable access to live business data without runtime API stitching. Engineers use it daily to build and maintain sync pipelines; the OSS core is a primary entry point, with cloud plans layered on top.