EAISENGINEERED AI SYSTEMS

Method / twelve layers

Every layer has a job, owner, control and evidence.

The model is one layer. The system is the full accountable path around it.

Architecture record

Twelve accountable layers

The examples below describe the stable control method. Scenario-specific inputs and failure paths are demonstrated in the Interactive System Trace on Home.

  1. 01

    Business / Technical Process

    Process owner

    Define the operational boundary before automation begins.

    ControlNamed trigger, scope, stop condition, and accountable process owner.

  2. 02

    Data / Documents / Signals

    Data steward

    Register source, provenance, access boundary, and usable payload.

    ControlSource allowlist, schema checks, access policy, and provenance capture.

  3. 03

    AI Capability

    AI engineering

    Apply only the model capability required by the process.

    ControlCapability boundary, model policy, confidence threshold, and fallback.

  4. 04

    Prompt / Agent Logic

    System designer

    Turn capability into versioned operating logic.

    ControlVersioned instructions, tool allowlist, constraints, and test fixtures.

  5. 05

    Software Architecture

    Software engineering

    Place the candidate inside reliable software boundaries.

    ControlTyped contracts, isolation, timeouts, idempotency, and error handling.

  6. 06

    Integration

    Integration owner

    Resolve system-of-record context without uncontrolled write access.

    ControlLeast privilege, read/write separation, credential scope, and retries.

  7. 07

    Workflow

    Operations owner

    Route the candidate through owners, exceptions, and service rules.

    ControlExplicit states, assignment rules, deadlines, and exception routes.

  8. 08

    Validation

    Validation owner

    Test the proposed result before any operational action.

    ControlDeterministic rules, eval criteria, exception thresholds, and evidence pack.

  9. 09

    Human Approval

    Designated approver

    Reserve the consequential decision for an accountable person.

    ControlApprove, Reject, or Escalate only; no automatic release or silent default.

  10. 10

    Deployment

    Release owner

    Execute only the approved action inside a controlled boundary.

    ControlApproval token, write scope, idempotency, rollback path, and release receipt.

  11. 11

    Monitoring

    Service owner

    Observe execution, outcome, exceptions, and service health.

    ControlHealth signals, exception alerts, service thresholds, and incident route.

  12. 12

    Continuous Improvement

    Process and product owner

    Close the loop with reviewed evidence, not autonomous self-modification.

    ControlHuman-owned review, versioning, regression tests, and controlled release.