Subvolts take Build and deploy application backends directly within Microsoft Fabric using this new open-source tool. Sep 17, 2026 - Developers
- You can now define and deploy application backends directly within Microsoft Fabric, leveraging its governance and compliance features.
- Business
- This simplifies the creation and management of internal applications that integrate with your data on Microsoft Fabric.
This release offers developers a new, integrated way to build and deploy applications within Microsoft Fabric, enhancing productivity.
Enterprise-ready Vibe Coding with Rayfin | Data Exposed
From Subvolts
Summary and analysis by Subvolts editorial, AI-assisted.
Microsoft introduced Rayfin, an open-source SDK and CLI, enabling users to define application backends in code and deploy them to Microsoft Fabric. Rayfin applications become first-class Fabric items, inheriting the platform's identity, access policies, governance, and compliance. This simplifies backend development and deployment within the Microsoft ecosystem.
Microsoft released a new tool called Rayfin. It lets developers write code for the back end of an application and easily put it onto Microsoft Fabric. This means the app works seamlessly with Fabric's security and rules.
Rayfin streamlines backend development for Microsoft Fabric, integrating applications directly into the platform. This benefits developers by simplifying deployment and leveraging Fabric's existing governance. It offers a path for building shareable sites and data applications. Competitors like Google and AWS offer similar cloud-native development tools, but Rayfin's tight integration with Fabric's data and governance features provides a distinct advantage for organizations already invested in the Microsoft ecosystem.
- Product: Rayfin
- Company: Microsoft
- Type: Open-source SDK and CLI
- Deployment Target: Microsoft Fabric
This move by Microsoft Copilot offers a more integrated backend development experience within its Fabric platform, similar to how Google Cloud or AWS provide tools for their respective cloud services.
- SDK
- Software Development Kit: A collection of software development tools in one installable package.
- A set of tools that helps programmers build software.
- CLI
- Command Line Interface: A text-based user interface used for interacting with computer programs or operating systems.
- A way to control a computer using typed commands instead of clicking buttons.
- Microsoft Fabric
- A unified, analytics platform for enterprise that brings together data warehousing, data integration, and big data analytics into one SaaS offering.
- A Microsoft service that combines different data tools for businesses.
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news. Pulled from this item and others like it.
- ChecklistRayfin application deployment considerationsChecklist for deploying Rayfin applications to Microsoft Fabric. · 15 min
- HeuristicDon't Wait for Models to Improve for Your TechActively improve AI agent performance by controlling their information sources. · 15 min
- Troubleshooting fixAI agent uses wrong SDK version or deprecated patternFix AI agent code errors by correcting the underlying documentation or training data sources. · 60 min
- HeuristicGrounding AI models in user data for relevanceAI results improve when grounded in your specific files and business data. · 5 min
Questions people ask
- What is Rayfin?
- Rayfin is an open-source SDK and CLI that allows users to define application backends in code and deploy them to Microsoft Fabric.
- What are the benefits of using Rayfin with Microsoft Fabric?
- Applications deployed with Rayfin become first-class Fabric items, inheriting the platform's identity, access policies, governance, and compliance, which simplifies management and integration.
More from Microsoft Developer on YouTube 75 more
Page generated Oct 19, 2026. Summaries are Subvolts' own; the story belongs to Microsoft Developer on YouTube.