Email Migration to Microsoft 365 in the Construction Industry
A global building materials manufacturer partnered with Interval to streamline and modernise its complex email estate, moving to Microsoft 365 / Exchange Online. This formed part of a wider IT transformation programme to increase operational efficiency, strengthen security, and enable scalable digital growth.
Approach
As part of its cloud-first strategy, the client chose to adopt Microsoft 365 as its core enterprise cloud platform - starting with a migration to Exchange Online. Interval was engaged to lead the end-to-end email migration project.
An Exchange Online Project Manager and Solution Architect were deployed to work within the infrastructure team, overseeing a team of technical SMEs. The project covered requirements gathering, migration planning, application dependencies, archiving, data retention, end-user devices and clients, change management, execution, and project closure.
In parallel, the project team supported a major domain consolidation initiative -technically assessing and planning the migration of all global domains to a unified .com domain. The work was delivered in alignment with the client’s established PMO standards (see success story on Infrastructure PMO).
Outcome
The project launched successfully with mailbox and application discovery completed in the first month. Legacy dependencies were identified and resolved through a triage approach - retiring, replacing, or remediating systems as needed.
A key challenge was defining archiving and data retention policies across regions with varying legal and regulatory requirements. This was addressed using Microsoft native archiving, integrated with Azure AD and the client's HR solution.
Mailbox migrations are now underway and tracked using a custom PowerBI dashboard. Once completed, the client will benefit from a fast, secure, and standardised email environment, fully consolidated to a single domain.