Lighthouse Governance Support Services Prepare Clients for Microsoft Purview eDiscovery Changes
eDiscovery professionals from several organizations across highly regulated industries (e.g., banking and utilities), as well as the IT staff supporting them, turn to Lighthouse for guidance.
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Challenges
In mid-2025, Microsoft retired Classic Purview eDiscovery (Standard and Premium) and introduced its new modern UI. Corporate legal and IT teams were required to address the changes proactively to ensure uninterrupted workflows. The new UI lacked functional parity and a familiar interface:
- PowerShell deprecations broke existing automations and scripts.
- New export formats disrupted downstream processes.
- Key functionality losses, such as CSV data import and export options for Condensed Directory Structure format and Azure storage, necessitated new workflow designs.
- Terminology changes (e.g., Custodians renamed to People) created confusion for legal teams.
Along with these changes, organizations were also dealing with new data types and changing data storage locations.
- Copilot adoption added new data types with separate preservation, collection, and export requirements.
- Teams private channel chats, and other collaboration data stored in new repositories, complicated retention and collection.
The pace and scope of Microsoft’s changes creates the need for ongoing expertise and proactive adaptation to sustain defensible eDiscovery practices.
Solution
Lighthouse addressed these challenges with our subscription-based Governance Support Services (GSS) for Microsoft Purview eDiscovery.
This combined approach minimizes disruption, enables rapid adaptation, and maintains defensible eDiscovery practices.
Key Outcomes
Through GSS, clients have been empowered to stay ahead of changes in MSFT Purview eDiscovery:
- Defensible legal holds, collections, and exports are preserved despite technological shifts.
- Workflows and training are updated in sync with Microsoft’s changes.
- Copilot and new Teams data types are properly managed under emerging retention and export rules.
With continuing access to our insights and experts, clients are empowered to navigate the ever-changing landscape of eDiscovery in M365.
Strong renewal rates year over year reflect the tangible value of this service. Get in touch with a Lighthouse M365 expert to get started.
