18 May 2026

Top 10 Power BI Migration Best Practices: Key Features and Updates for 2025–2026

Q: What happens to existing reports during a Power BI migration?

Existing reports are assessed, rebuilt, optimized, and validated in the new environment to ensure data accuracy, security, and visual consistency are maintained. Reports should only move to production after successful integration testing, user acceptance testing, and performance validation.

For enterprises running business intelligence operations on Power BI, 2025–2026 represents the most significant platform shift in the product's history. Microsoft has restructured Power BI as the reporting and analytics layer of Microsoft Fabric, introducing capabilities that directly impact how migrations are planned, executed, and maintained.

1. Migration Planning and Architecture Now Powered by Git and PBIR

A structured migration roadmap begins with a comprehensive assessment of existing reports, dashboards, and data sources before any workloads are moved.

Microsoft Fabric Migration 2026 Features

Microsoft now supports Git-based version control for Power BI reports, enabling teams to track every change and manage deployments systematically. PBIR, Power BI's new default report format from 2026, also changes how reports are stored and deployed across environments. Both need to be factored into migration timelines from the outset.

2. Data Model Performance Redefined by Direct Lake and Copilot

Star schema design, optimized relationships, and well-structured DAX logic remain non-negotiable standards for any enterprise migration.

Direct Lake mode now allows reports to query OneLake data directly in real time, eliminating scheduled refresh cycles and delivering near-import-mode performance without data duplication. Copilot's DAX generation, now generally available, allows analysts to produce and validate DAX measures through natural language, reducing dependency on specialist skills and accelerating delivery timelines

3. Security and Compliance Automated Through Microsoft Purview

Row-level security, authentication configuration, and audit logging remain the core pillars of a defensible Power BI security posture.

Microsoft Purview is now natively integrated into Power BI and Fabric, automatically enforcing sensitivity labels and compliance controls across all reports and datasets, including when data is shared across organizational boundaries. For enterprises in regulated industries, this significantly reduces the compliance overhead typically required by migrations.

4. Infrastructure and Capacity Transformed by Fabric F SKU Billing

Gateway configuration and capacity provisioning must be completed well in advance of any production cutover.

Premium P SKUs have been replaced by Fabric F SKUs, which introduce pause-and-resume billing. Organizations now only pay for capacity when it is actively being used. This delivers a meaningful reduction in infrastructure costs for enterprises with predictable usage patterns. Power BI Desktop also now supports Windows on ARM devices.

5. User Access and Workspace Management Expanded With Org Apps

Workspace architecture, role assignment, and permission structures need to be fully mapped before any migration goes live.

Org Apps on Pro workspaces now allows organizations to create multiple tailored application experiences for different business units from within a single workspace, without requiring Premium licensing. This improves governance and reduces administrative overhead across large user bases.

6. Testing and Validation Critical Updates Every Team Must Know

Integration testing, user acceptance testing, and row-level security verification must be completed before any environment goes to production.

Two updates require immediate attention. Power BI has replaced Bing Maps with Azure Maps, so all map-based reports must be reviewed and retested before going live. R and Python visuals no longer render in embedded reports or Publish to Web scenarios as of May 2026, making a full audit of affected reports essential before migration.

7. Documentation and Knowledge Transfer Simplified With Copilot

Technical specifications, data lineage records, and standard operating procedures are what enable organizations to maintain Power BI environments long after migration day.

Copilot can now automatically generate plain-language descriptions for DAX measures in Power BI Desktop and the web modeling experience, reducing documentation effort while improving consistency across large semantic model libraries.

8. System Integration and Connectivity Unified Through OneLake

Every integration point, including pipelines, connectors, and cloud platforms, must be inventoried and validated as part of the migration scope.

Dataflow Gen2 replaces legacy Power BI dataflows as the standard data preparation mechanism. OneLake provides a unified storage layer across all Fabric workloads, allowing Power BI, Spark, and SQL Warehouse to access the same data without duplication. Support for Spark and Impala native connectors has also been expanded.

9. Monitoring and Maintenance Automated With Data Activator

Proactive monitoring must be in place from day one, as performance issues rarely announce themselves in advance.

Data Activator enables organizations to configure automated alerts that fire the moment data crosses a defined threshold, delivering notifications through Microsoft Teams or triggering Power Automate workflows without manual intervention. Copilot is now also available on the Power BI mobile app, allowing users to query data in natural language from anywhere.

10. Cloud Integration and Management Consolidated Into Microsoft Fabric

Enterprise Power BI deployments in 2026 are Microsoft Fabric deployments built around OneLake, a single unified data layer that eliminates duplication across services.

Fabric integrates with Microsoft Foundry, enabling prebuilt machine learning models to be incorporated directly into Power BI reporting environments. Azure Reserved Instance pricing also delivers up to 60 percent in cost savings on three-year capacity commitments.

What's Been Deprecated Act Before It's Too Late

What	Status	What To Do
R & Python visuals in embedded reports	Retired May 2026	Replace with native Power BI visuals
Bing Maps visual	Being replaced	Migrate to Azure Maps
Power BI Premium P SKUs	No new features	Plan move to Fabric F SKUs
Power BI Desktop 32-bit	Retired Aug 2025	Move to 64-bit builds
Legacy Power BI dataflows	Being phased out	Upgrade to Dataflow Gen2

Why Choose DataTerrain for Your Power BI Migration

At DataTerrain, our certified Power BI consultants have guided numerous organizations through Power BI migrations, Microsoft Fabric transformations, and enterprise BI modernizations, ensuring optimal performance, security, and user adoption. With over 17 years of expertise and an automated any-to-any BI platform migration framework, we reduce timelines, eliminate manual effort, and ensure accuracy across every report, dataset, and dashboard regardless of the source platform.

Frequently asked questions:

1. What Power BI features are deprecated in 2025–2026?

R and Python visuals in embedded reports, Bing Maps, Power BI Desktop 32-bit, Premium P SKUs, and legacy Power BI dataflows have all been deprecated in 2025–2026. Organizations must audit and replace these features before migration to avoid broken reports and unsupported visuals in production environments.

2. How much does it cost to migrate to Power BI?

The cost of a Power BI migration depends on the number of reports, data sources, and security configurations involved in your environment. With Fabric F SKUs introducing pay-as-you-use billing, organizations now have more flexible and cost-effective options than ever before.

3. What happens to existing reports during a Power BI migration?

Existing reports are assessed, rebuilt, and validated in the new environment to ensure data accuracy and visual consistency are fully maintained. No reports go live in production until they pass integration testing, user acceptance testing, and security verification checks.