Microsoft Purview eDiscovery Premium Deployment
Purview eDiscovery Premium is required for any organization with active litigation, HR investigations, regulated-industry exposure, or Copilot deployments needing long-term retention. This is the EPC Group 6-week fixed-fee deployment playbook plus the regulatory-industry customization catalog.
The 6-week deployment
- Week 1 — License activation + role assignment (Compliance Admin, eDiscovery Manager, eDiscovery Administrator).
- Week 2 — Case setup + naming convention + retention policy defaults.
- Weeks 2-3 — Custodian schema definition (Entra ID attributes + department + matter type).
- Weeks 3-4 — Legal hold workflow with automated notification, custodian acknowledgment, escalation to Legal.
- Weeks 4-5 — Review set configuration: tagging schema, redaction workflow, TAR if in scope.
- Weeks 5-6 — Export configuration to Relativity / RelativityOne / DISCO with chain-of-custody logging.
Frequently Asked Questions
What is Purview eDiscovery Premium and when do I need it?
Purview eDiscovery Premium (formerly Advanced eDiscovery) is the enterprise-tier eDiscovery capability in Microsoft 365. Standard eDiscovery covers basic search + export. Premium adds: legal hold with custodian notification workflow, review sets with tagging + redaction, predictive coding (technology-assisted review), transcript-searchable Teams meetings, threading, near-duplicate detection, and export to Relativity + other litigation platforms. You need Premium if you have ANY of: active or historical litigation, HR investigation workflow, HIPAA / GLBA / FINRA / SOX regulatory exposure, or Copilot deployment (Copilot conversations need Premium for effective long-term retention + legal hold).
What's the license SKU?
Purview eDiscovery Premium requires Microsoft 365 E5 Compliance or Microsoft 365 E5 (full suite) — it is NOT available on E3 as a standalone add-on. If you're on E3, the upgrade path is either Microsoft 365 E5 Compliance add-on (~$12/user/month above E3) or full E5 (~$25/user/month above E3). For orgs where only Legal + HR + Compliance need it, target the license to those users specifically rather than upgrading the full tenant — Purview handles license-scoped feature activation.
What are the deployment phases?
Six phases: (1) License activation + role assignment (Weeks 1). (2) Case setup + naming convention + retention policy (Week 2). (3) Custodian schema definition — how you identify custodians from Entra ID, department, matter type (Week 2-3). (4) Legal hold workflow — automated notification, custodian acknowledgment, escalation to Legal for non-responders (Week 3-4). (5) Review set configuration — tagging schema, redaction workflow, TAR (technology-assisted review) if in scope (Week 4-5). (6) Export configuration — target platforms (Relativity, RelativityOne, DISCO), export format standards, chain-of-custody logging (Week 5-6). Total 6 weeks fixed-fee.
How does Copilot factor in?
Copilot conversations (prompts + responses + citations) are eDiscoverable in Purview eDiscovery Premium. This means: (1) You can put a legal hold on a specific user or matter and have their subsequent Copilot activity preserved. (2) You can search Copilot conversations by keyword, date range, sensitivity label, or custodian. (3) You can export Copilot activity into a review set alongside email + Teams + SharePoint content. (4) Copilot activity is subject to the same retention policy you configure for the tenant — 1 year default, adjustable up to indefinite for held content. Copilot Governance Attestation (see /answers/30-day-copilot-readiness-accelerator) references this coverage.
What are the regulatory-industry customizations?
Six common ones. (1) Healthcare — HIPAA-compliant custodian notification templates, PHI-labeled review sets segregated from Business review sets, IRB-integrated research workflows. (2) Financial services — FINRA-compliant retention on customer-communication content, SEC 17a-4 immutability, dedicated Compliance-role access separate from HR + Legal. (3) Federal — FedRAMP-High GCC High tenant deployment, FOIA-response workflow, CUI-labeled review sets. (4) Legal industry — attorney-client privilege markers, work-product doctrine tagging. (5) Public companies — SOX-Section 302 executive-communication holds, insider-trading window enforcement. (6) Life sciences / manufacturing — trade-secret classification + reverse-engineering protection. EPC Group customizes the deployment to whichever vertical(s) apply.
Talk to a senior architect
Email contact@epcgroup.net or call 888-381-9725.
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