Reference

How on-session and off-session payments differ, why it matters for fraud prevention, and the 3DS authentication requirements across jurisdictions.

The PDE payment sequence — what data gets created, in what order, in which systems. The green safe zone and the amber commitment point.

~50 product services check entitlements at runtime. Today they follow subscription state. They should follow payment outcomes instead.

Five event types feed one recompute engine. Read all state, compute correct status, apply minimal diff. Disagreement is structurally impossible.

Account state fragmented across six stores, mutated by three areas. The current flow, consistency failures, and the target Gather→Compute→Apply architecture.

The atomic unit of subscription state — composite state from 5 signals, 3 value kinds, dual subscriptions, and provisioning reconciliation.