Every consulting firm says they are the best. Here is independent, third-party proof that EPC Group delivers. G2 Leader ratings, a perfect NPS score, Microsoft validation, and 11,000+ enterprise engagements — verified by platforms we do not control.
Buyers in 2026 do not trust marketing copy. They trust independent verification. Before signing a six-figure consulting engagement, enterprise decision-makers check G2, Clutch, and Trustpilot. They verify Microsoft partner status. They ask for references in their specific industry. They compare NPS scores across shortlisted vendors.
This page exists to make that due diligence process faster. Instead of searching across five different platforms, you can see all of EPC Group's independent validation in one place — with direct links to the third-party sources so you can verify everything yourself. We built this page because we believe proof should be easy to find, not buried.
Every metric on this page is either sourced from a third-party platform (G2, Clutch, Trustpilot, Microsoft) or calculated using standard industry methodology (NPS). Nothing on this page is self-assessed or unverifiable. If a claim does not have an independent source, it does not belong here.
Independent platforms where EPC Group cannot edit, manipulate, or remove ratings.
Recognized as a Leader in Enterprise IT Consulting on G2, the world's largest software and services marketplace. G2 ratings are based on verified user reviews — EPC Group cannot edit or influence them.
The highest possible Net Promoter Score, meaning every surveyed client rated EPC Group a 9 or 10 out of 10 for recommendation likelihood. Industry average is 35-45.
Microsoft Solutions Partner designation across Modern Work, Data & AI, and Azure. Validated by Microsoft through demonstrated customer success, certified professionals, and deployment metrics.
Clutch conducts independent phone interviews with EPC Group clients to verify project outcomes, timelines, budgets, and satisfaction. Reviews include detailed project descriptions.
Trustpilot collects and verifies reviews from actual EPC Group clients. The platform uses automated verification to confirm genuine customer relationships.
Numbers without context are meaningless. Here is what 11,000+ enterprise engagements looks like broken down by category, industry, and scale.
EPC Group's implementations include environments ranging from 500-user departmental projects to 10,000+ user organization-wide transformations. Our largest single engagement involved migrating a Fortune 500 healthcare system with 25,000+ users from on-premises infrastructure to Microsoft 365, including Exchange, SharePoint, Teams, and Azure AD — completed with zero unplanned downtime. We specialize in the complex, compliance-heavy environments that smaller consultancies cannot handle.
Errin O'Connor, EPC Group's founder and CEO, is a 4-time Microsoft Press bestselling author. Microsoft Press selects authors based on demonstrated expertise — you cannot pay to be published. These books are used as reference material by Microsoft professionals worldwide.
Enterprise business intelligence implementation guide covering data modeling, DAX, governance, and enterprise deployment.
Published by Microsoft Press (Pearson)
Comprehensive SharePoint administration, governance, and migration guide for enterprise environments.
Published by Microsoft Press (Pearson)
Cloud infrastructure, migration planning, and hybrid architecture for enterprise Azure deployments.
Published by Microsoft Press (Pearson)
Methodology and best practices for migrating 10,000+ user environments to Microsoft 365 and Azure.
Published by Microsoft Press (Pearson)
EPC Group founded, specializing in Microsoft ecosystem consulting
First Microsoft Press book published (SharePoint)
1,000th implementation milestone reached
Power BI consulting practice launched
Azure and cloud migration practice expanded
5,000th implementation milestone reached
Microsoft Solutions Partner designation earned (new program)
AI governance and Copilot consulting practice launched
G2 Leader recognition in Enterprise IT Consulting
10,000th implementation milestone, NPS 100 achieved
G2 Leader maintained for 4th consecutive quarter
EPC Group's track record is validated by multiple independent sources: G2 Leader status for 4 consecutive quarters in Enterprise IT Consulting, a Net Promoter Score (NPS) of 100 based on verified client surveys, Microsoft Solutions Partner designation (verified directly by Microsoft), Trustpilot reviews from verified clients, Clutch.co verified reviews with detailed project feedback, and over 10,000 implementations completed across Fortune 500 and regulated industries. These are third-party platforms where EPC Group cannot edit or manipulate the ratings.
EPC Group maintains a Net Promoter Score (NPS) of 100, which is the highest possible NPS score. NPS is measured through post-project client surveys asking 'How likely are you to recommend EPC Group?' on a 0-10 scale. Scores of 9-10 are Promoters, 7-8 are Passives, and 0-6 are Detractors. NPS = % Promoters minus % Detractors. An NPS of 100 means every surveyed client gave a 9 or 10. For context, the average NPS in IT consulting is 35-45, and scores above 70 are considered world-class.
Microsoft Solutions Partner is the current (post-2022) replacement for the legacy Microsoft Gold Partner program. It requires demonstrated technical competency validated by Microsoft through customer deployments, certified professionals on staff, and measurable customer success metrics. EPC Group holds Solutions Partner designations across multiple solution areas including Modern Work, Data & AI, and Azure. This designation is verified and renewed by Microsoft annually — it cannot be self-claimed or purchased.
EPC Group has completed over 10,000 implementations across 29 years of operation. These span Microsoft 365 migrations (including environments with 10,000+ users), Power BI enterprise deployments for Fortune 500 companies, Azure infrastructure projects, SharePoint governance implementations, AI strategy and governance frameworks, and Microsoft Teams deployments for regulated industries. Implementation scale ranges from departmental projects to organization-wide transformations across healthcare, financial services, government, education, and manufacturing.
EPC Group has received recognition including G2 Leader in Enterprise IT Consulting (4 consecutive quarters 2025-2026), Microsoft Solutions Partner designation across multiple solution areas, Clutch Top IT Consulting Company recognition, and industry-specific awards for healthcare IT and financial services consulting. EPC Group's founder Errin O'Connor is a 4-time Microsoft Press bestselling author (Power BI, SharePoint, Azure, and large-scale migration books) and frequent speaker at Microsoft Ignite, SharePoint Conference, and industry events.
Verified reviews of EPC Group are available on multiple independent platforms: G2.com (enterprise IT consulting category, filtered by verified reviews), Clutch.co (detailed project reviews with budget, timeline, and outcome information), Trustpilot (verified customer reviews), Google Business Profile (local reviews), and Microsoft AppSource (partner reviews). Each platform has its own verification process — G2 requires LinkedIn authentication, Clutch conducts phone interviews with clients, and Trustpilot verifies purchase/engagement history.
Yes. EPC Group provides references from healthcare organizations (HIPAA-regulated), financial services firms (FINRA/SEC-regulated), government agencies (FedRAMP environments), and educational institutions (FERPA-compliant). Due to NDA and compliance requirements, reference calls are arranged directly rather than published publicly. Prospective clients can request industry-specific references during the sales process. EPC Group typically provides 3-5 references matched to the prospect's industry, project scope, and organizational size.
EPC Group tracks comprehensive client satisfaction metrics including Net Promoter Score (NPS: 100), project delivery on-time rate (tracked per engagement), client retention rate (percentage of clients engaging for multiple projects), first-call resolution rate for managed services, SLA compliance metrics for support agreements, and post-implementation adoption rates. These metrics are reviewed quarterly by EPC Group leadership and shared with clients during quarterly business reviews. The NPS score is independently calculated through standardized survey methodology.
Schedule a conversation with EPC Group. We will provide industry-specific references, walk through relevant case studies, and answer every question about our track record.
Microsoft Solutions Partner status (six designations: Data & AI, Modern Work, Infrastructure, Security, Digital & App Innovation, Business Applications) replaced the legacy Microsoft Gold Partner program in 2022. EPC Group held Gold Partner status from 2003 to 2022 (the oldest continuous Gold Partner in North America) and currently holds all six Solutions Partner designations; a credentialing footprint shared by fewer than 50 firms globally and typically used by Microsoft field teams as a vetting gate for enterprise Customer 0 nominations and named-account engagements.
EPC Group 29-year Microsoft consulting heritage matters specifically because Microsoft platform decisions today are layered on top of 25 years of architectural choices: Active Directory schema decisions from 2005 affect Microsoft Entra ID Conditional Access policy design in 2026; SharePoint 2003 information architecture decisions affect Copilot grounding quality in 2026. The firms that can navigate that depth (fewer than a dozen Microsoft Solutions Partners in North America) have a structural advantage on enterprise Microsoft migrations.
For a tailored read on this topic in your specific tenant, contact EPC Group at contact@epcgroup.net or +1 (888) 381-9725. Engagement options at /pricing.