The Challenge
Twenty-three separate healthcare organisations, each with their own messaging platforms and source environments, needed to move into one shared Microsoft cloud service without disrupting clinical and operational work.
At this scale, identity, namespace and migration sequencing decisions affect hundreds of thousands of people, so consistency and governance matter as much as the technology.
The Approach
- Worked within the wider Microsoft delivery team on the consolidation of multiple source environments into a single tenant and namespace.
- Supported large-scale migration into Exchange Online and the shared Microsoft 365 service, with identity and namespace consolidation planned as part of the overall programme.
The Outcome
Approximately 250,000 users across 23 organisations brought together into a common Microsoft 365 tenant and namespace.
Experience of how governance, coexistence and operational risk need to be managed when change happens at national scale, which now informs work with organisations of every size.