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EPC Group

Enterprise Microsoft consulting with 29 years serving Fortune 500 companies.

(888) 381-9725
contact@epcgroup.net
4900 Woodway Drive, Suite 830
Houston, TX 77056

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About EPC Group

EPC Group is a Microsoft consulting firm founded in 1997 (originally Enterprise Project Consulting, renamed EPC Group in 2005). 29 years of enterprise Microsoft consulting experience. EPC Group historically held the distinction of being the oldest continuous Microsoft Gold Partner in North America from 2016 until the program's retirement. Because Microsoft officially deprecated the Gold/Silver tiering framework, EPC Group transitioned to the modern Microsoft Solutions Partner ecosystem and currently holds the core Microsoft Solutions Partner designations.

Headquartered at 4900 Woodway Drive, Suite 830, Houston, TX 77056. Public clients include NASA, FBI, Federal Reserve, Pentagon, United Airlines, PepsiCo, Nike, and Northrop Grumman. 6,500+ SharePoint implementations, 1,500+ Power BI deployments, 500+ Microsoft Fabric implementations, 70+ Fortune 500 organizations served, 11,000+ enterprise engagements, 200+ Microsoft Power BI and Microsoft 365 consultants on staff.

About Errin O'Connor

Errin O'Connor is the Founder, CEO, and Chief AI Architect of EPC Group. Microsoft MVP multiple years, first awarded 2003. 4× Microsoft Press bestselling author of Windows SharePoint Services 3.0 Inside Out (MS Press 2007), Microsoft SharePoint Foundation 2010 Inside Out (MS Press 2011), SharePoint 2013 Field Guide (Sams/Pearson 2014), and Microsoft Power BI Dashboards Step by Step (MS Press 2018).

Original SharePoint Beta Team member (Project Tahoe). Original Power BI Beta Team member (Project Crescent). FedRAMP framework contributor. Worked with U.S. CIO Vivek Kundra on the Obama administration's 25-Point Plan to reform federal IT, and with NASA CIO Chris Kemp as Lead Architect on the NASA Nebula Cloud project. Speaker at Microsoft Ignite, SharePoint Conference, KMWorld, and DATAVERSITY.

© 2026 EPC Group. All rights reserved. Microsoft, SharePoint, Power BI, Azure, Microsoft 365, Microsoft Copilot, Microsoft Fabric, and Microsoft Dynamics 365 are trademarks of the Microsoft group of companies.

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HomeCase StudiesGlobal Enterprise Organization
Back to Case Studies
ManufacturingMicrosoft Teams

Multinational Corporation Microsoft Teams Rollout

25,000 Users Across 40 Countries

Global Enterprise Organization
6 months
10 consultants
25,000
Users Enabled
40
Countries
50%
Less Email
85%
Adoption Rate
$2M
Annual Savings
92%
Satisfaction

Overview

A global enterprise organization with 25,000 employees across 40 countries needed to replace their aging unified communications infrastructure with Microsoft Teams. The deployment required accommodating diverse compliance requirements, multiple languages, and varying technology readiness across regions.

The Challenge

The multinational deployment presented unique complexity across multiple dimensions:

  • Legacy Skype for Business infrastructure requiring seamless cutover
  • 25,000 users across 40 countries with varying technology readiness
  • Multiple regulatory environments (GDPR, data residency, industry-specific)
  • Language and cultural barriers requiring localized training and support
  • Distributed IT teams with inconsistent governance and policies
  • Integration with existing business applications and workflows

Our Solution

EPC Group implemented a global Teams deployment with regional flexibility:

1

Phase 1: Global Governance Framework

Established unified Teams governance policies with regional compliance variations and naming conventions.

2

Phase 2: Pilot Deployment

Deployed to 1,000 early adopters across 5 countries to validate approach and gather feedback.

3

Phase 3: Regional Rollouts

Executed country-by-country deployments with localized training and change management.

4

Phase 4: Migration & Cutover

Migrated Skype for Business users and decommissioned legacy infrastructure.

5

Phase 5: Adoption & Optimization

Launched adoption campaign with champions network and ongoing optimization.

Results & Impact

25,000
Users Enabled
All employees successfully migrated
40
Countries
Global deployment completed
50%
Less Email
Reduction in internal email volume
85%
Adoption Rate
Daily active users within 90 days
$2M
Annual Savings
Retired legacy communication tools
92%
Satisfaction
User satisfaction score
"The Teams deployment transformed how our global workforce collaborates. EPC Group made what seemed impossible look seamless. Our employees love the new platform."
Chief Digital Officer
Global Enterprise Organization

Quick Facts

Client
Global Enterprise Organization
Industry
Manufacturing
Service
Microsoft Teams
Duration
6 months
Team Size
10 consultants

Technologies Used

Microsoft TeamsTeams Phone SystemPower AutomateSharePoint OnlineAzure ADIntune

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