Fabric Weekly

1

17 Jun 2026 – 30 Jun 2026

🎉 Welcome to the very first edition of Fabric Weekly! After far too long leaving Microsoft Fabric to get covered as a footnote in everyone else's newsletter, it finally has one of its own. Every week from here on, we'll round up the official announcements, the community deep-dives, and the "wait, did you know Fabric could do that?" moments from across Data Engineering, Reporting & Insights, Storage & Platform, Governance & Security, Management & Cost, and Copilot/AI & Agents - all in one place.

On the official side:

The headline is Fabric Data Agents now supporting Microsoft Entra ID service principal authentication - one of the most requested capabilities for moving data agents from prototype to production, and the start of a short video series if you want to follow the setup step by step.

Also worth a look: Event-Driven Copy Job Execution with Fabric Activator is now GA, letting you trigger Copy jobs straight from an Activator rule with no pipeline in between, and there's a new Fabric Spark Operations Skill (Preview) that turns "why did my notebook fail at 3am" into a single natural-language prompt instead of a multi-tab log hunt.

Microsoft is also bringing Power Query connectors fully in-house with a clearer Preview-to-Retirement lifecycle.

And Build 2026 brought a long list of announcements covered in James Serra's roundup: Agent Skills for Power BI is the one most likely to change how you build reports, while Rayfin - the new open-source SDK that lets coding agents define and deploy a full governed app backend straight onto Fabric - might be the one that changes what counts as a Fabric workload at all.

Over in the community:

Roman Lánský dug into why your mirrored "real-time" reports might quietly be serving stale data, and what the new SQL endpoint metadata sync does about it.

Nikola has written the definitive (and very long) guide to variable libraries, the Fabric item that exists specifically so "Test is reading Prod" becomes a story you only tell at conferences.

John Kerski makes the case that DAX User Defined Functions are the biggest thing to happen to semantic model testing since PBIP, and has the downloads on his PQL.Assert library to back it up.

Meagan Longoria offers a sensible crawl-walk-run framework for agentic Power BI development if you'd rather not hand an AI agent the keys all at once

And, Adam Marczak argues it's time to stop treating Azure itself as the platform and pick Fabric or Databricks as the actual center instead.

Thanks for being here for issue #1 - tell a friend, tell your whole workspace...