C15 Layer 4 - Orchestration & Ecosystem

Distributed Orchestration Control Plane

Routing, backpressure, and safe-rollout controls for distributed agents. Canary deploys, rollback on metric breach, tenant isolation enforced at the orchestration plane.

Why

  • Agents behave like distributed actors. Without orchestration you get uncontrolled retries, unclear dependencies, and unsafe rollouts.

What

  • A workflow/orchestration layer that: coordinates task DAGs
  • routes across agent versions safely
  • applies global backpressure (queue/concurrency) and budgets
  • provides retry policies and compensation actions

How

  • represent workflows as DAGs with explicit dependencies
  • safe rollouts: canary/shadow/rollback with measurable gates
  • global concurrency pools; tool-specific queues
  • compensation actions for partial failures (idempotency and rollback)

Evidence

  • orchestration execution history and state transitions
  • rollback events tied to anomaly thresholds
  • backpressure events and queue health

Failure modes

  • orchestration logic embedded in agent prompts
  • unbounded retries
  • lack of idempotency leading to duplicate side effects
  • Agent Deadlock: Two agents waiting on each other for inputs (A waits for B, B waits for A).

Mitigation: The Orchestrator must implement a "cycle detection" or "step timeout" watchdog that terminates the DAG if progress stalls. Architect’s Note - Macro control plane responsibilities Control 15 defines orchestration-level governance (queue depth, concurrency, backpressure, scheduling, retries/backoff). It does not replace Gateway-level rate limiting and quotas (Control 07); it governs workflow execution dynamics across many calls and many agents.

NIST AI RMF alignment

C15 maps to GOVERN and MANAGE. See the framework paper for the specific subcontrol mappings.

ISO/IEC alignment

C15 maps to ISO/IEC 27001. Typical evidence: see the Evidence section above.

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