ArticleOneLake: The Unified Data Lake at the Heart of Microsoft Fabric
OneLake is the single, tenant-wide logical data lake that underpins every Microsoft Fabric experience. This article covers the architecture, shortcut system, and security model practitioners work with day to day; the newer zero-copy enterprise sharing story - delegated shortcuts, the ServiceNow connector, and Iceberg interoperability; and then goes underneath the API to the Delta transaction log - commits, checkpoints, snapshot isolation, and data skipping - that makes OneLake's one-copy promise actually hold up under concurrent, multi-engine access.