Execution outruns governance. Agentic systems act without authority, mutate state without attestation, and drift without constraint. The missing layer is deterministic enforcement at the execution boundary.
Enterprise AI does not fail because models lack capability. It fails because execution outruns governance: agentic systems act without authority, mutate state without attestation, and drift without constraint. The gap is not intelligence — it is the absence of a deterministic constraint at the point where intention becomes action.
Runtime governance closes that gap by inserting deterministic enforcement at the execution boundary. Capability is admitted only after authority, attestation, drift containment, and substrate isolation have each been satisfied — before, not after, state mutation is allowed to proceed.