🚀 Microsoft Fabric September 2025 update: Key new features you need to know about
Microsoft continues to evolve Fabric. With the September 2025 update, it incorporates enhancements designed to provide more security, governance, scalability and cost control. These new features reinforce Fabric as the comprehensive data platform which allows companies to modernise their analytics and optimise resource management. Here are the most important of these:
🔑 Platform & user experience
- Flat view in Deployment PipelinesIt is now easier to navigate between different elements of a pipeline, even if they are in different workspaces. The flat view makes it easier to manage complex projects where multiple artefacts are deployed.
- Documented REST APIs in OpenAPI/GitHubMicrosoft has published clear, reusable documentation that enables IT teams to integrate Fabric into their own processes. This opens the door to automating routine tasks, reducing human error and speeding up the rollout of new projects.
- Service principals and cross-tenant support with Azure DevOps (Preview)This new feature facilitates the automation of deployments in multi-tenant corporate environments, enabling advanced CI/CD and improved permissions management.
⚡ Data & performance engineering
- Autoscale Billing for SparkSpark jobs can now be run with "pay-as-you-go" billing, i.e. paying only for the resources actually consumed. This is especially useful for projects with variable workloads, optimising investment.
- Job bursting controlThe following example: Administrators can decide whether a job can use up to 3× more capacity than allocated to complete faster. This balances the need for performance with efficient resource management.
- JobInsight DiagnosticsNew monitoring tools provide more detailed information about Spark execution, making it easier to detect bottlenecks, optimise cluster utilisation and ensure stability even with high concurrency.
📥 Intake and DataOps
- Improved copyThe data copy process now includes automatic creation of target tables, support for incremental loads and support for new formats such as JSON. This speeds up data integration and simplifies the work of data teams.
- Dataflow Gen2has been extended with public APIs, run history and validation in the editor. It also supports more data sources, making it easier to build richer and more controlled ETL flows.
- Improved User Functions (UDFs)The Pandas DataFrames and Series can now be used with Pandas DataFrames and Series, save snapshots of Notebooks and generate OpenAPI specifications. This enhances code reuse and collaboration between analytics and development teams.
🔒 Governance & security
- Outbound Access Protection for SparkA key measure to prevent Spark jobs from accessing unauthorised external resources, strengthening security and compliance.
- New auditing and logging capabilitiesThe new system: traceability is extended with detailed records of operations, making it easier for compliance teams to comply with regulations such as GDPR or ISO.
- Reinforced cross-tenant integrationThe new system, designed for large organisations working in distributed environments, allows centralised management of access and deployments between multiple tenants.
📌 What do these 5 improvements mean for your business?
- Cost controlThanks to Spark autoscaling, only the resources consumed are paid for, avoiding unnecessary expenses for one-off workloads.
- Greater stability and reliabilityNew diagnostic tools reduce the risk of outages and improve the user experience in critical environments.
- Real automationIntegration with APIs and DevOps facilitates the implementation of modern pipelines, accelerates deployments and reduces reliance on manual processes.
- Enhanced securitymeasures such as outbound access protection and extended auditing strengthen governance and regulatory compliance.
- More productivityDataflows, Notebooks and pipeline enhancements reduce day-to-day friction, allowing teams to focus on analysis and decision making.
👉 NextStep, Microsoft Solutions Partnerwe help you take advantage of the latest Fabric enhancements:
*Article and images generated with the help of ChatGPT