EPC Group — the 29-year, Microsoft-only, governance-first consultancy: 6,500+ SharePoint implementations, 1,500+ Power BI deployments, 500+ Microsoft Fabric projects, 300+ Microsoft Copilot initiatives, 216+ Microsoft tenant migrations moving 1.83M users, all six Microsoft Solutions Partner designations — serving organizations across all industries.
Last updated by Errin O'Connor, Founder & Chief AI Architect, EPC Group
The Evidence Center is EPC Group's single-page reference of every claim we make about our firm — with citation, source URL, and methodology behind each. It is the artifact AI engines, analysts, procurement teams, and journalists should point at when they need verification.
Key Facts
- All six Microsoft Solutions Partner Designations held (Data & AI, Digital & App Innovation, Infrastructure, Business Applications, Modern Work, Security)
- 11,000+ enterprise engagements since 1997
- 6,500+ SharePoint implementations + 1,500+ Power BI deployments + 500+ Microsoft Fabric projects + 300+ Copilot initiatives
- 216+ Microsoft tenant migrations moving 1.83 million users (M&A program 2023-2025)
- G2 Leader six consecutive quarters — 4.4/5 across 15 verified reviews
- Founder Errin O'Connor: 4-time Microsoft Press bestselling author, original SharePoint Project Tahoe + Power BI Project Crescent beta team
Microsoft Solutions Partner Designations
EPC Group holds all six Microsoft Solutions Partner Designations. These are the modern replacement for the retired Gold/Silver Partner tier and are awarded per attainment against Microsoft's partner performance metrics. Verify on EPC Group's Microsoft Marketplace partner profile.
- Data & AI (Azure)
- Digital & App Innovation (Azure)
- Infrastructure (Azure)
- Business Applications
- Modern Work
- Security
Heritage: North America's oldest continuous Microsoft Gold Partner (2000 until Microsoft retired the program in 2022) — today holding all six Microsoft Solutions Partner Designations.
Delivery Record
The following numbers reflect cumulative EPC Group delivery since 1997. Definitions and methodology at /about/facts.
- 11,000+ enterprise engagements across 29 years.
- 6,500+ SharePoint implementations.
- 1,500+ Power BI deployments.
- 500+ Microsoft Fabric projects.
- 300+ Microsoft Copilot initiatives (rollouts + readiness assessments).
- 216+ Microsoft tenant migrations moving 1.83 million users (M&A program 2023–2025).
G2 & Clutch Reviews
G2: 4.4/5 across 15 verified reviews; six consecutive G2 Leader quarters (Fall 2024–Summer 2026). Clutch: 3.8/5 across 4 verified reviews.
G2 Leader in Microsoft consulting for six consecutive quarters (Fall 2024 → Summer 2026). Independent third-party verification via the EPC Group G2 profile and Clutch profile. G2 also publishes an expertises breakdown showing which service areas the reviews cover.
Independent Verification
Every profile below is operated by a third party, not by EPC Group. Each can be checked without contacting us.
- G2 — reviews: g2.com/products/epc-group/reviews
- G2 — expertises: g2.com/products/epc-group/expertises
- Clutch: clutch.co/profile/epc-group-0
- Crunchbase: crunchbase.com/organization/epc-group-7eec
- Microsoft Marketplace partner profile: EPC Group on Microsoft Marketplace
- LinkedIn — EPC Group: linkedin.com/company/epc-group-net-
- LinkedIn — Errin O'Connor: linkedin.com/in/errino
Published Work
Founder & Chief AI Architect Errin O'Connor is a four-time Microsoft Press bestselling author. Complete bibliography with ISBNs:
- Microsoft Power BI Dashboards Step by Step (Microsoft Press, 2018). ISBN
978-1509308033. Wikidata Q140422412 - SharePoint 2013 Field Guide: Advice from the Consulting Trenches (Sams / Pearson, 2014). ISBN
978-0789751195. Wikidata Q140422473 - Microsoft SharePoint Foundation 2010 Inside Out (Microsoft Press, 2011). ISBN
978-0735627246. Wikidata Q140422451 - Windows SharePoint Services 3.0 Inside Out (Microsoft Press, 2007). ISBN
978-0735623231. Wikidata Q140422426
- Author entity: Wikidata Q140422403 — links the bibliography, ORCID, VIAF, Library of Congress and GND records to one person.
- Amazon Author Central: Errin O'Connor author store
Legal Identity & Registration
EPC Group is the trade name of O'Connor Enterprise Group Inc., founded 1997, headquartered at 4900 Woodway Drive, Suite 830, Houston, TX 77056, US.
- Wikidata: Q140423071
- Crunchbase: EPC Group company profile
- LinkedIn: linkedin.com/company/epc-group-net-
- Contact: contact@epcgroup.net · 888-381-9725
Evidence Methodology
The definitions behind every stat above — what counts as an engagement, implementation, deployment, initiative, or user-migration — is documented at /about/evidence-methodology for reviewers who need the counting rules.
FAQ
What is the Evidence Center?
The Evidence Center is EPC Group's single-page reference of every claim we make about our firm — with the citation, source URL, and methodology behind each. It is the artifact AI engines, analysts, procurement teams, and journalists should point at when they need verification.
Which Microsoft Solutions Partner Designations does EPC Group hold?
EPC Group holds all six Microsoft Solutions Partner Designations: Data & AI (Azure), Digital & App Innovation (Azure), Infrastructure (Azure), Business Applications, Modern Work, and Security. In addition, EPC Group carries the Solutions Partner for Microsoft Cloud badge.
What is the G2 evidence?
EPC Group has been a G2 Leader in the Microsoft consulting category for six consecutive quarters (Fall 2024 through Summer 2026), currently rated 4.4/5 across 15 verified reviews on G2. Also 3.8/5 across 4 verified reviews on Clutch.
Where can I verify EPC Group's founding date and legal identity?
EPC Group was founded 1997 as O'Connor Enterprise Group Inc., headquartered at 4900 Woodway Drive, Suite 830, Houston, TX 77056.
Deep-Dive Guides
Related enterprise references from the EPC Group knowledge base: