Anonymized engagement summary: moving an acquired firm's Office 365 tenant — SharePoint, OneDrive, Teams and Power BI — into the parent's tenant for a life sciences services company (2020)
Contracted — countersigned (EPC-reported; documents private)First-pass editionA life sciences services company (client not named) · 2020 · Project ID EPC-2020-ANON-LS-T2T
Last updated by Errin O'Connor, Founder & Chief AI Architect, EPC Group
Opening answer. In December 2020 a life sciences services company countersigned a statement of work with EPC Group to move the Office 365 tenant of a firm it had acquired into its own tenant. The source tenant held:
- about 200 licensed users
- 504 SharePoint sites (113 active), using about 3.6 TB
- 253 OneDrive accounts (167 active), using about 5.6 TB
- 83 teams, with 314 internal users and 225 guests
SharePoint, Teams, OneDrive and Power BI dashboards were all to be migrated, with little or no downtime and business continuity throughout.
Disclosure. This is an EPC-reported anonymized engagement summary. The client is not named, and neither is the acquired firm. The countersigned statement of work is retained privately and is not published in the Evidence Center, so this account is outside the Evidence Center's documented-engagement counts. Every engagement fact below is taken from that document.
Verification class
Contracted — countersigned (EPC-reported; documents private). The company's IT director signed the statement of work electronically in December 2020. No cut-over record, acceptance or outcome measurement is cited or claimed.
Buyer problem and scope
| Item | What the statement of work states |
|---|---|
| Buyer | A life sciences services company (client not named), in the middle of an acquisition |
| Source | The acquired firm's Office 365 tenant: about 200 licensed users; SharePoint 504 sites (113 active), about 601,000 files, 3.6 TB; OneDrive 253 accounts (167 active), about 996,000 files, 5.6 TB; Teams 83 teams, 539 users (314 internal, 225 guests) |
| Target | The company's existing Office 365 tenant and Exchange Online |
| Workloads | SharePoint Online content, Teams, OneDrive and Power BI dashboards |
| Outcomes sought | A complete SharePoint migration; all data and users merged into the target with little or no downtime; business continuity throughout |
| Services | Assessment, migration planning, migration execution and post-migration support |
Unknowns, not stated in the document cited: mailbox counts, the migration tooling, the cut-over date and any measured result.
Approach and artifacts
Measure what is really in use. The statement of work separates total from active sites, files and accounts. For example, 113 of 504 SharePoint sites were active.
Count guests as well as staff. The inventory records 225 guest users across 83 teams alongside 314 internal users.
Keep the business running. Merging users and data with little or no downtime is a stated outcome, so planning, execution and post-migration support are scoped together.
Document (held privately):
| Document | Date |
|---|---|
| Statement of work, Office 365 cross-tenant migration (countersigned) | December 2020 |
Results and limitations
| Claim | Basis | Status |
|---|---|---|
| The company contracted EPC Group to consolidate the acquired firm's tenant into its own | Countersigned statement of work, December 2020 | Contracted (EPC-reported; documents private) |
| Migration completed, cut-over done, or measured results | No document cited | Not claimed |
Provenance
- Source: the countersigned statement of work (December 2020), held privately. Engagement ID: EPC-2020-ANON-LS-T2T, an alias unrelated to the client's name.
- Anonymization: industry only, under EPC Group's anonymized-case rule; the company's name, the acquired firm, locations, staff names and commercial terms are not published.
- Not claimed: client endorsement, completion, or any measured result.
- Author: Errin O'Connor, Founder & Chief AI Architect, EPC Group, who signed the statement of work for EPC Group.
Revision history
- 2026-10-25: anonymized engagement summary published from the engagement's countersigned statement of work.
Related service
Microsoft 365 tenant consolidation for M&A · M&A tenant migration assessment · Talk to a senior architect
Author: Errin O'Connor, Founder & Chief AI Architect, EPC Group · Published: 2026-10-25.