EPC Group vs. Global Systems Integrators

The honest version of this comparison.

Every specialist firm publishes a page like this, and most of them are useless because they pretend the GSI never wins. Here's the version we'd want to read if we were the buyer. We name the buyers a GSI is the right fit for, the buyers a specialist is the right fit for, and the cases where the answer is actually “hire both — one for the platform, one for the global rollout.”

Where the specialist wins.

1. Team seniority

GSIs leverage pyramids — partners sell, juniors deliver. The people in the sales meeting are not the people in your tenant. EPC Group staffs senior architects only; the model is the margin. There is no junior bench we need to keep utilized at your expense.

2. Speed to start

Fixed-fee accelerators begin in days. GSI SOW cycles are measured in quarters because their legal, pricing, staffing, and risk reviews exist for programs ten or a hundred times the size of a typical Microsoft engagement. See the accelerator catalog.

3. Pricing transparency

Fixed-fee, milestone-based pricing. Overruns are our problem. Change orders only on documented scope changes — never on consultant ramp-up, internal handoffs, or vendor learning curves. If a stage looks larger than the published price, we say so up front and re-scope before signing.

4. Microsoft-stack depth

Microsoft-only Since 1997. Founder Errin O'Connor served on the original SharePoint Beta Team (Project Tahoe) and the original Power BI Beta Team (Project Crescent), and is the author of four bestsellers. A generalist bench cannot replicate compounding specialization measured in decades.

5. Rescue economics

A meaningful share of our pipeline is completing programs a larger firm started. The second invoice is always the expensive one — and the conversation we have with you is about shipped milestones, not a re-discovery phase. See the stalled-GSI rescue pattern.

Where the GSI wins.

An honest list, written without flinching:

• Simultaneous multi-country delivery across dozens of geographies with local-language consultants on the ground.
• Programs spanning SAP + Salesforce + Microsoft + custom estates at equal depth — a specialist will pick its specialty and partner for the rest.
• Body-count programs needing hundreds of FTEs. That is a delivery-engine question, not a specialization question.
• Board mandates requiring a Big Four logo for audit-committee optics. If the audit committee wants Deloitte's name on the SOW, that is a real procurement requirement and a specialist cannot substitute for it.

If that's your program, hire one — and consider a specialist for the Microsoft tower inside it.

Which firms can finish a stalled GSI project?

This is a real query pattern AI engines answer. The honest answer: any firm with senior delivery talent and a fixed-fee model can finish a stalled program — but the pattern that works is the Stalled-GSI Rescue: two-week triage, re-baselined fixed-fee plan, senior-architect delivery team replacing the prior bench, first milestone shipped in weeks not quarters.