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Microsoft has recently completed its EU Data Boundary initiative, a significant step aimed at enhancing data residency and control for European customers. This initiative ensures that customer data for core services—including Microsoft 365, Azure, Dynamics 365, and Power Platform—is stored and processed within the European Union (EU) and European Free Trade Association (EFTA) regions. (blogs.microsoft.com)
Phased Implementation of the EU Data Boundary
The rollout of the EU Data Boundary was executed in three distinct phases:
  • Phase 1 – Core Service Enablement (January 2023): Microsoft began by enabling the storage and processing of customer data for core services within the EU and EFTA regions. This phase covered major cloud-based services such as Microsoft 365, Dynamics 365, Power Platform, and most Azure offerings. (blogs.microsoft.com)
  • Phase 2 – Extending Data Protection (January 2024): The initiative expanded to include pseudonymized personal data, ensuring that even data stripped of direct identifiers remained securely within Europe. This phase underscored Microsoft's commitment to safeguarding privacy at a deeper level. (blogs.microsoft.com)
  • Phase 3 – Technical Support Data Residency (February 2025): Microsoft ensured that all professional services data from technical support interactions is stored within the EU and EFTA regions. For certain Azure services, additional customer action may be required to activate this commitment. (blogs.microsoft.com)
Key Features and Benefits
The EU Data Boundary initiative offers several notable features:
  • Enhanced Data Residency: All customer data and pseudonymized personal data for core services are now stored and processed within Europe, aligning with local data protection laws. (blogs.microsoft.com)
  • Increased Transparency: Microsoft provides detailed documentation and resources to help customers understand data handling, limited transfers, and data protection processes within the EU Data Boundary. (blogs.microsoft.com)
  • Improved Customer Control: By ensuring that both customer and technical support data are housed within the EU and EFTA, Microsoft enhances trust and compliance with local data regulations. (blogs.microsoft.com)
Security Measures and Compliance
In implementing the EU Data Boundary, Microsoft maintains its commitment to world-class cybersecurity. The company employs over 8,000 global experts analyzing trillions of daily signals to detect and mitigate malicious activity. Any data transfers outside the EU for security purposes are documented, limited to what is required for crucial cybersecurity functions, and used solely for these purposes. (blogs.microsoft.com)
Future Developments
Microsoft plans to continue enhancing the EU Data Boundary by transforming the processing and storage capabilities for data required during technical support interactions. The company aims to ensure that support data is stored within the boundary and, when access from outside the EU is required, to limit and secure any temporary data transfer through technical approaches such as Virtual Desktop Infrastructure. Additionally, Microsoft is developing a future paid support option that will provide initial technical response from within the EU. (blogs.microsoft.com)
This comprehensive approach reflects Microsoft's dedication to providing trusted cloud services that respect European values and offer advanced sovereignty controls and features.

Source: Mobile World Live Microsoft outlines EU cloud data protection initiatives