The platform, not the model, decides whether enterprise AI delivers.

Three things are true at once in 2026: AI adoption is near universal, most AI projects still fail in production, and the ones that succeed share a mature platform underneath. This playbook makes the case that the foundation decides, maps the five-layer pyramid and the four-pillar control plane, gives you two accelerators on one Azure and GitHub foundation, and turns the strategy into a 90/180/365-day sequence measured in DORA and GitHub AI Credits.