Structured onboarding decides whether GitHub Copilot returns value or stalls at 23%.

Companies do not fail at GitHub Copilot because the tool is weak. They fail because literacy is unequal. This playbook turns a license into a program: twenty-four SDLC personas across seven clusters, a five-stage journey from preparation to autonomy, a quick win inside the first seventy-two hours, and a Center of Excellence that owns the cadence after the formal program ends. Teams with formal onboarding reach 80 percent active adoption in ninety days; teams without it settle near 23 percent.