In our 19-criteria evaluation of business transformation consultancies, we identified 10 of the world's top consultancies — Accenture, Capgemini, Cognizant, Deloitte, EY, IBM, KPMG, PwC, SapientRazorfish, and Tata Consulting (TCS) — and researched, analyzed, and scored them. This report shows how each provider measures up and helps CIOs and business leaders make the right choice of consulting partner.