When a global law firm began moving its IT services to the cloud as part of a wider transformation programme, migrating its email platform became a critical milestone. Advania supported the organisation in transitioning from on-premises Exchange to Exchange Online, ensuring strong security, continuity of service, and minimal disruption for thousands of users across multiple regions.
🔎At a glance
- Global multinational law firm
- 30 offices across 20 countries
- Over 2,800 lawyers
- Exchange 2010 migration to Exchange Online
🚨The challenge
The firm was undertaking a major cloud migration programme and needed to move its email infrastructure off legacy systems nearing end of support.
However, the project came with significant constraints:
- Strict legal-sector data security requirements
- Tight migration timelines
- Complex integrations with existing messaging tools
- Users highly sensitive to disruption during migration
Email continuity was essential to business operations, meaning downtime and risk had to be carefully managed.
💡The approach
Advania designed and implemented a secure migration architecture while integrating existing services such as Proofpoint, Cisco Viewmail, and enterprise encryption tools.
The delivery included:
- Messaging architecture and design documentation
- Identity integration planning
- Messaging migration testing and validation
- Security and compliance design
- Exchange Online configuration and deployment
- Detailed migration planning and reporting
☑️The outcome
- Successful migration from Exchange 2010 to Exchange Online
- Secure email environment aligned with legal-sector compliance requirements
- Seamless transition for thousands of users
- Strong governance and documentation for future operations
⚡️Why this matters
Law firms operate under strict security, compliance, and operational continuity requirements. This project demonstrates how carefully planned migrations can modernise legacy infrastructure while maintaining the trust and reliability critical to legal services.
