Reef Production Admission

Context

Fabric topology can say that a reef hosts a rail or binds a workload, but that does not demonstrate capacity, isolation, recoverability, or approval for a critical internet-facing service.

Decision

Rail and rapp bindings use explicit readiness states: declared, installed, verified, production-approved, and deprecated.

Critical workloads require machine-readable conformance evidence plus explicit acceptance of residual risks that cannot be automated. Mixed-rail reefs use defined split triggers.

The detailed contract is docs/reef-production-readiness-contract.md.

Who may reach a listener is a different axis: ADR-0008. Production admission does not imply a public surface. A public surface requires this admission and an exposure grant.

Consequences

• hosts_rail and binds_rapp no longer imply deployability.
• reef-railiance may host Knative in wave 2, but Qonto cannot be called production-approved solely from that declaration.
• Repeated evidence collection should become functional automation.
• production-approved is not permission to publish a listener. See ADR-0008.