Variable Libraries Microsoft Fabric

Variable libraries in Microsoft Fabric let you switch values between environments (dev, test, prod) without touching your code. In this video I walk through creating a variable library, setting up default and environment-specific value sets, and deploying it through a deployment pipeline. I cover using variables to drive environment-specific logic in notebooks (like skipping code on dev vs. prod), referencing Key Vault secret names dynamically, and a more advanced example: swapping SQL Server connections in a pipeline at runtime based on the active environment using dynamic content and if-statements. This makes automated deployments possible without manual connection swapping in the UI. I also share a couple of features I'd love to see added: a global variable library shared across workspaces, and native secret support inside variable libraries. Let me know in the comments what you'd want to see added. If you found this useful, subscribe and hit the thumbs up. New videos every week. Chapters: 00:00 — Intro: what variable libraries solve 00:34 — Setting up the example (notebook reading a missing library) 01:14 — Creating a variable library 02:26 — Running the notebook with default values 02:43 — Deploying via deployment pipeline 04:18 — Running the notebook on production values 04:50 — Using an "environment" variable to branch logic 05:59 — Use case: driving Key Vault secret names 07:06 — Setting up two SQL Server connections (dev/prod) 08:22 — Creating a pipeline and copy data activity 09:20 — Adding library variables to the pipeline 09:51 — Using dynamic content with if/equals logic 11:19 — Wiring the if-statement to swap connection IDs 12:00 — Why this matters for automated deployments 12:34 — Alternative approach: storing connection IDs in the library 12:43 — Feature wishlist: global libraries and secret variables