STM — Sustainability Threshold Module
Architecture:
VEGA™ — Value Execution Governance Architecture
Parent Standard:
Intelligence Sustainability Standard (ISS)
Category:
Governance & Enforcement
Subcategory:
Value Execution Governance
Type: Core Module
Governed Space:
Intelligence Sustainability Threshold Governance
Module ID: VEGA-ISS-STM-001
Origin ID: OOF.CM.VEGA.08.01.01
Version: 1.0
Status: Canonical · Open Standard
Effective Date: 30 September 2026
Compatibility: OOF® Methodology OS™ · Modular OOF® Architecture Ecosystem
AI-Readable: Yes
Authority: OOF® — OriginOpen® Foundation
Protection:
MIP® — Methodological Intellectual Property
Canonical Language:
English (UCL™)
1. Canonical Definition
The Sustainability Threshold Module (STM) governs how the minimum conditions required for an intelligence operating model to remain viable and proportionate across its intended lifecycle are defined, evidenced, monitored, and reassessed.
STM establishes the boundary between an intelligence operating state that remains sufficiently sustainable for its governed purpose and one that has become constrained, degrading, or no longer viable.
It converts sustainability from a broad qualitative objective into an assessable governance boundary by defining what must remain true across the relevant capability, resource, energy, infrastructure, economic, dependency, and continuity conditions.
STM does not require one universal sustainability threshold.
The applicable threshold must reflect the governed intelligence capability, operating model, lifecycle horizon, applicable constraints, and Value Basis.
Its principal output is:
Governed Sustainability Threshold State
Its foundational distinction is:
Continued Operation ≠ Sustainability Threshold Satisfaction.
2. Operational Role
The operational role of STM is:
to establish the minimum governed conditions that must remain satisfied for an intelligence operating model to continue qualifying as sufficiently sustainable within its defined boundary and lifecycle horizon.
ISS asks:
“Can this intelligence operating model remain viable and proportionate over its intended lifecycle?”
STM establishes the boundary against which that viability can be assessed.
3. Position in the ISS Internal Flow
The ISS internal governance flow is:
Sustainability Threshold → Execution Energy Viability → Infrastructure Sustainability → Economic Continuity → Dependency Sustainability
STM governs:
Sustainability Threshold
Its principal upstream input is:
Governed Strategic Value State
Its principal output is:
Governed Sustainability Threshold State
That state proceeds to:
Execution Energy Viability Governance
4. Central Operational Question
What minimum conditions must remain satisfied for the intelligence operating model to remain sufficiently viable and proportionate across its intended lifecycle?
5. Sustainability Threshold Object
Every STM assessment must identify the intelligence operating model to which the threshold applies.
The Sustainability Threshold Object should identify, where applicable:
required intelligence capability; intended operational outcome; applicable Value Basis; relevant execution configuration; intended operating environment; lifecycle horizon; and applicable governed constraints.
A threshold defined for one operating model should not automatically be transferred to another without demonstrating applicability.
6. Sustainability Boundary
STM establishes the boundary within which sustainability is evaluated.
The boundary may contain:
Capability Conditions — what intelligence capability must remain available.
Resource Conditions — what continuing resource availability is necessary.
Energy Conditions — what execution energy conditions must remain viable.
Infrastructure Conditions — what supporting infrastructure must remain available and sufficient.
Economic Conditions — what continuing economic conditions must remain viable.
Dependency Conditions — which dependencies must remain available, replaceable, or otherwise governable.
Continuity Conditions — what minimum continuity must remain achievable.
Only materially relevant conditions should enter the threshold.
7. Lifecycle Horizon
A Sustainability Threshold must be interpreted against a defined lifecycle horizon.
The horizon may represent:
a deployment period,
contract period,
product lifecycle,
infrastructure lifecycle,
strategic operating period,
or another relevant duration.
A system capable of operating for the next month may still be unsustainable for a required five-year lifecycle.
Short-Term Viability ≠ Lifecycle Sustainability.
8. Threshold Formation
A Sustainability Threshold should be derived from the conditions necessary to preserve the governed intelligence purpose rather than selected arbitrarily.
The formation process should connect:
Required Outcome
→ Required Intelligence Capability
→ Required Operating Conditions
→ Applicable Constraints
→ Minimum Sustainable Conditions
→ Sustainability Threshold
The threshold therefore originates from operational necessity and governed constraints.
9. Threshold Basis
Every material threshold should have an identifiable Basis.
The Basis may derive from:
validated operating requirements,
capacity limits,
engineering constraints,
economic viability boundaries,
dependency requirements,
service continuity requirements,
historical evidence,
or another defensible source.
Where the Basis is uncertain, that uncertainty should remain visible.
10. Threshold Structure
A Sustainability Threshold may contain multiple coordinated conditions rather than one numerical value.
A conforming implementation may define:
Minimum Conditions
Warning Conditions
Critical Conditions
Failure Conditions
The threshold should be measurable where measurement is methodologically appropriate and evidence-assessable where direct quantification is not appropriate.
11. Threshold Dimensions
The applicable threshold may combine:
Capability Threshold
Resource Threshold
Energy Threshold
Infrastructure Threshold
Economic Threshold
Dependency Threshold
Continuity Threshold
Not every implementation requires every dimension.
Only material dimensions should form part of the threshold.
12. Threshold Interaction
Threshold dimensions should not automatically be evaluated independently.
An intelligence operating model may remain:
economically viable but infrastructure-constrained,
energy-efficient but dependency-fragile,
resource-efficient but incapable of preserving required capability,
or technically sustainable but economically non-viable.
STM therefore evaluates the combined threshold state.
13. Critical Threshold Dimension
A Critical Threshold Dimension is a condition whose failure independently threatens the sustainability of the intelligence operating model.
Strong performance elsewhere cannot automatically compensate for failure of a critical dimension.
14. Compensable Threshold Conditions
Some non-critical sustainability conditions may permit controlled trade-offs where the operating model remains viable and all applicable governed constraints remain satisfied.
Such compensation must be explicit and evidenced.
Threshold Trade-Off ≠ Constraint Waiver.
15. Minimum Sufficient Sustainability
STM does not seek maximum available capacity.
It establishes the minimum sufficient conditions required for the intelligence operating model to remain viable.
Sustainability requires sufficient operating conditions, not maximum available capacity.
16. Threshold Baseline
STM should establish a baseline against which sustainability change can be evaluated.
The baseline may include:
operating demand,
resource consumption,
energy requirement,
infrastructure utilization,
economic burden,
dependency structure,
continuity state,
and applicable Value conditions.
17. Current Sustainability State
The Current Sustainability State represents the observed operating conditions at the time of assessment.
The governance relationship becomes:
Baseline → Current State → Threshold → Margin → Change
18. Sustainability Margin
Where methodologically appropriate, STM may represent the distance between the Current Sustainability State and the applicable threshold.
Possible states may include:
Strong Margin
Adequate Margin
Narrowing Margin
Critical Margin
Threshold Reached
Threshold Breached
Unresolved
A large current margin does not guarantee future sustainability.
19. Margin Consumption
Operating growth or deterioration may progressively consume the Sustainability Margin.
Margin Consumption should be observable where it materially affects the expected time before a threshold is reached.
20. Margin Recovery
The Sustainability Margin may increase through:
efficiency improvement,
capacity expansion,
dependency diversification,
economic improvement,
resource reduction,
or another evidenced change.
Recovery should represent an actual improvement in sustainability conditions rather than a weakened threshold.
21. Warning State
A Warning State indicates that the operating model remains within the Sustainability Threshold but is moving toward a critical boundary.
Warning evidence may include:
rising utilization,
declining resource availability,
increasing energy burden,
cost escalation,
hardware aging,
dependency concentration,
or shrinking continuity margin.
Warning ≠ Breach.
22. Critical State
A Critical State exists where the operating model remains operational but has little remaining margin before one or more critical sustainability conditions are violated.
A Critical State should trigger increased monitoring and reassessment according to the applicable governance process.
23. Threshold Breach
A Threshold Breach occurs when a required sustainability condition is no longer satisfied.
The breach record should identify:
the affected condition,
supporting evidence,
materiality,
duration,
recoverability,
and relationship to the operating model.
24. Breach Severity
Threshold breaches may differ materially in consequence.
A conforming implementation may distinguish:
Minor Breach
Material Breach
Critical Breach
Structural Breach
Severity should depend on operational consequence rather than terminology alone.
25. Temporary Breach
A Temporary Breach is a short-duration threshold violation where the operating model can credibly return to the required state without structural change.
Temporary does not mean irrelevant.
Duration and recurrence remain governable.
26. Persistent Breach
A Persistent Breach continues beyond the acceptable recovery boundary.
Persistent breach may indicate that the existing operating model no longer satisfies its sustainability requirement.
27. Structural Breach
A Structural Breach exists where the operating model cannot reasonably return to threshold satisfaction without material redesign, substitution, migration, additional capability, or another structural intervention.
28. Breach Recovery
STM should identify whether a breached threshold can return to compliance and what condition would demonstrate recovery.
Recovery should be evidenced.
Return to Operation ≠ Threshold Recovery by default.
29. Recovery Stability
A system should not necessarily be classified as sustainably recovered immediately after crossing back above a threshold.
Where relevant, the recovered condition may need to persist for a defined period or operating state.
30. Threshold Persistence
Some sustainability conditions must remain continuously satisfied.
Others may tolerate bounded temporary variation.
STM should define persistence requirements where they materially affect the interpretation of the threshold.
31. Threshold Timing
Threshold governance may include temporal properties such as:
time before expected breach,
permitted breach duration,
recovery window,
minimum persistence period,
and reassessment interval.
Time should be included only where it materially changes sustainability interpretation.
32. Threshold Forecasting
Forecasting may estimate whether current trends are likely to reach a Sustainability Threshold within the lifecycle horizon.
Forecasting may use:
workload growth,
capacity trends,
energy trends,
cost trends,
hardware lifecycle,
dependency changes,
or other relevant evidence.
A forecast supports governance.
It does not prove the future state.
Forecast ≠ Future Sustainability State.
33. Threshold Monitoring
Material threshold conditions should be monitored at a frequency proportionate to how quickly they can change and the consequence of breach.
Monitoring should focus on decision-relevant signals rather than measurement volume.
More Monitoring ≠ Better Sustainability Governance.
34. Leading Sustainability Indicators
Leading indicators may provide evidence that the Sustainability Margin is deteriorating before a threshold is reached.
Examples may include:
accelerating workload,
rising energy intensity,
capacity saturation trends,
cost acceleration,
declining substitutability,
or increasing dependency concentration.
35. Lagging Sustainability Indicators
Lagging indicators confirm conditions that have already occurred, such as:
actual capacity failure,
actual cost breach,
dependency outage,
or sustained threshold violation.
A robust implementation may use both leading and lagging evidence where appropriate.
36. Threshold Dynamics and Drift
Sustainability conditions may change gradually even when the formal threshold remains constant.
Drift may arise from:
demand growth,
resource deterioration,
energy changes,
infrastructure aging,
economic change,
dependency concentration,
or declining Value.
STM should detect movement toward the boundary before sustainability failure becomes operational failure.
37. Threshold Reassessment
Reassessment should occur when material changes affect:
required capability,
operational demand,
validated Value,
execution configuration,
resource consumption,
energy requirements,
infrastructure,
economic conditions,
dependencies,
or lifecycle horizon.
38. Threshold Revision
A Sustainability Threshold may legitimately change when the underlying governed requirement changes.
Revision should preserve:
the previous threshold,
the new threshold,
the reason for change,
supporting evidence,
effective time,
and version.
39. Threshold Revision Integrity
Threshold changes must remain distinguishable from operating improvements.
Lowering a threshold after deterioration does not improve sustainability.
Threshold Revision ≠ Sustainability Improvement.
40. Threshold Manipulation
STM should detect attempts to preserve apparent sustainability through:
boundary narrowing,
metric substitution,
removal of unfavorable conditions,
reclassification of critical dimensions,
shortened lifecycle horizons,
unsupported threshold weakening,
or selective evidence.
The governing principle is:
A threshold must govern the operating model; the operating model must not redefine the threshold merely to remain compliant.
41. Threshold Evidence
Threshold formation and assessment should rely on evidence appropriate to the governed condition.
Evidence may include:
historical operating data,
capacity measurements,
resource records,
energy measurements,
economic evidence,
infrastructure limits,
provider conditions,
dependency analysis,
technical specifications,
validated requirements,
and observed failure states.
42. Evidence Quality and Provenance
Material threshold evidence should preserve sufficient information concerning:
source,
time,
scope,
methodology,
version,
and relationship to the threshold.
Evidence quality should correspond to the materiality of the threshold condition.
43. Assumptions and Uncertainty
Where sustainability depends on assumptions concerning:
future demand,
technology,
resource availability,
energy,
cost,
infrastructure,
or dependencies,
those assumptions should remain explicit.
Uncertainty should influence the confidence attached to the threshold state.
It should not be hidden through false precision.
44. Threshold Confidence
The Governed Sustainability Threshold State may include confidence reflecting the strength and completeness of the underlying evidence.
Possible representations may include:
High Confidence
Moderate Confidence
Conditional
Evidence-Limited
High Uncertainty
Unresolved
45. Threshold Relationship to Value
Sustainability exists in relation to a justified intelligence purpose.
STM therefore preserves:
Required Capability ↔ Validated Value ↔ Sustainability Conditions
If the Value Basis changes materially, the Sustainability Threshold may require reassessment.
STM does not redefine Value.
46. Threshold Relationship to Governed Constraints
A sustainability state cannot be improved by violating an applicable governed constraint.
Reducing:
safety,
required reliability,
validation,
security,
human oversight,
or another applicable requirement
does not constitute legitimate sustainability optimization where that requirement remains binding.
A sustainability state achieved by violating an applicable governed constraint is not a valid governed sustainability state.
47. Governed Sustainability Threshold State
The principal output of STM is:
Governed Sustainability Threshold State
It should identify, where applicable:
Sustainability Threshold Object,
required intelligence capability,
Value Basis,
sustainability boundary,
lifecycle horizon,
Threshold Basis,
threshold dimensions,
critical dimensions,
minimum conditions,
warning conditions,
critical conditions,
failure conditions,
Threshold Baseline,
Current Sustainability State,
Sustainability Margin,
Margin Trend,
Warning State,
Critical State,
Breach State,
Breach Severity,
Breach Duration,
Recovery State,
persistence requirements,
forecast state,
drift state,
assumptions,
uncertainty,
confidence,
evidence,
version,
and provenance.
Possible states may include:
Satisfied
Satisfied with Strong Margin
Satisfied with Narrowing Margin
Warning
Critical
Conditionally Satisfied
Temporarily Breached
Persistently Breached
Structurally Breached
Recovering
Evidence-Limited
Unresolved
48. Minimum Implementation Framework
A conforming implementation of STM must provide exactly the following six capabilities:
1. Threshold Object & Boundary Governance
Capability to define the intelligence operating model, required capability, Value Basis, sustainability boundary, and lifecycle horizon.
2. Threshold Formation & Condition Governance
Capability to establish the Threshold Basis, material dimensions, critical dimensions, minimum conditions, warning conditions, critical conditions, failure conditions, and permitted interactions.
3. Baseline, Margin, Breach & Recovery Governance
Capability to establish the Threshold Baseline, evaluate the Current Sustainability State, assess Sustainability Margin, classify warnings and breaches, and evidence recovery.
4. Monitoring, Drift & Reassessment Governance
Capability to monitor decision-relevant sustainability signals, detect margin consumption and drift, forecast potential threshold contact, and trigger reassessment following material change.
5. Threshold Evidence & Integrity Governance
Capability to preserve evidence, assumptions, uncertainty, confidence, versioning, and provenance while preventing threshold weakening, boundary manipulation, or other integrity failures.
6. ISS Execution Energy Viability Handoff Governance
Capability to produce a Governed Sustainability Threshold State sufficiently explicit for subsequent Execution Energy Viability governance.
49. Governance Logic
The canonical STM governance logic is:
Governed Strategic Value State
↓
Identify Sustainability Threshold Object
↓
Define Required Intelligence Capability / Value Basis
↓
Establish Sustainability Boundary / Lifecycle Horizon
↓
Establish Threshold Basis
↓
Identify Material / Critical Dimensions
↓
Define Minimum / Warning / Critical / Failure Conditions
↓
Establish Threshold Baseline
↓
Observe Current Sustainability State
↓
Assess Sustainability Margin / Margin Trend
↓
Monitor Leading / Lagging Indicators
↓
Detect Warning / Critical / Breach State
↓
Assess Breach Severity / Duration / Recoverability
↓
Assess Drift / Forecast / Persistence
↓
Assess Evidence / Assumptions / Uncertainty
↓
Test Threshold Integrity
↓
Establish Governed Sustainability Threshold State
↓
Handoff to Execution Energy Viability Governance
50. Governance Outputs
STM may produce:
Sustainability Threshold Object
Sustainability Boundary
Lifecycle Horizon
Threshold Basis
Capability Threshold
Resource Threshold
Energy Threshold
Infrastructure Threshold
Economic Threshold
Dependency Threshold
Continuity Threshold
Critical Threshold Dimension State
Threshold Baseline
Current Sustainability State
Sustainability Margin
Margin Trend
Threshold Warning State
Threshold Critical State
Threshold Breach State
Breach Severity State
Threshold Recovery State
Threshold Persistence State
Threshold Forecast State
Threshold Drift State
Threshold Evidence Record
Threshold Uncertainty State
Threshold Confidence State
Threshold Version
Threshold Provenance
The principal output is:
Governed Sustainability Threshold State
51. Critical Distinctions
STM preserves the following distinctions:
Continued Operation ≠ Sustainability Threshold Satisfaction
Short-Term Viability ≠ Lifecycle Sustainability
Current State ≠ Sustainability Threshold
Threshold Warning ≠ Threshold Breach
Threshold Breach ≠ Automatic System Failure
Temporary Breach ≠ Structural Breach
Return to Operation ≠ Threshold Recovery by default
Excess Capacity ≠ Sustainability by default
Threshold Trade-Off ≠ Constraint Waiver
Forecast ≠ Future Sustainability State
More Monitoring ≠ Better Sustainability Governance
Threshold Revision ≠ Sustainability Improvement
Value ≠ Sustainability
Sustainability Threshold ≠ Decision Authority
52. Cross-Architecture Boundary
STM governs Sustainability Thresholds within ISS.
Subsequent ISS governance evaluates:
Execution Energy Viability,
Infrastructure Sustainability,
Economic Continuity,
and Dependency Sustainability.
VGS governs Value.
RGS governs intelligence execution resources.
COS governs Computational Optimization.
IES governs Intelligence Economy.
SVGS governs Strategic Value.
DGS governs lifecycle decisions.
VALIDOS™ may govern validation methodology.
ADIT® may govern evidence and auditability.
HAGA™ governs Harm.
LIGA™ governs Liability.
STM may consume governed evidence from these spaces without replacing their methodologies.
53. Canonical Boundary
STM begins when an intelligence operating model has a sufficiently defined capability requirement, Value Basis, operational boundary, and intended lifecycle to establish sustainability conditions.
STM governs:
threshold formation,
Threshold Basis,
sustainability boundaries,
lifecycle horizons,
threshold dimensions,
critical dimensions,
minimum conditions,
warning conditions,
critical conditions,
failure conditions,
threshold interactions,
Threshold Baselines,
Current Sustainability States,
Sustainability Margins,
margin consumption and recovery,
warning states,
breach states,
breach severity,
temporary, persistent, and structural breaches,
recovery,
persistence,
threshold timing,
forecasting,
monitoring,
leading and lagging indicators,
drift,
reassessment,
revision,
integrity,
evidence,
uncertainty,
confidence,
versioning,
and provenance.
STM does not independently govern:
Execution Energy Viability,
Infrastructure Sustainability,
Economic Continuity,
Dependency Sustainability,
general resource allocation,
energy production or distribution,
Value definition,
Computational Optimization,
Intelligence Economy,
Strategic Value,
Harm,
Liability,
or final continuation, scaling, migration, and retirement decisions.
STM ends when the minimum conditions required for sustainable intelligence operation have been represented as a:
Governed Sustainability Threshold State
for subsequent Execution Energy Viability governance.
54. Use Case 1 — AI Service Is Running but Capacity Margin Is Disappearing
An intelligence service continues operating successfully.
Validated outcomes remain strong and users experience no immediate service failure.
However:
execution demand is growing,
infrastructure utilization is approaching its operating limit,
reserve capacity is declining,
and the expected workload will exceed current capacity before the end of the intended lifecycle.
STM establishes:
the applicable threshold,
Threshold Baseline,
Current Sustainability State,
Sustainability Margin,
Margin Trend,
warning conditions,
expected threshold contact,
and supporting evidence.
The system may remain operational while entering a sustainability warning or critical state.
Continued Operation ≠ Sustainability Threshold Satisfaction.
55. Use Case 2 — Sustainability Target Is Lowered After the System Misses It
An organization establishes a minimum sustainability condition for an intelligence operating model.
As resource demand and operating cost increase, the system exceeds the original threshold.
Instead of treating the change as deterioration, the organization lowers the threshold and reports that the system remains sustainable.
STM preserves:
the original threshold,
the original Basis,
the observed operating state,
the threshold breach,
the revised threshold,
and the evidence supporting any legitimate revision.
If the threshold was changed primarily to preserve an appearance of sustainability, the revision does not constitute sustainability improvement.
Threshold Revision ≠ Sustainability Improvement.
56. Canonical Closing Statement
Sustainability cannot be governed without a boundary.
A system may continue operating while the margin supporting that operation disappears.
The purpose of a Sustainability Threshold is not to wait for failure.
It is to make the approach toward unsustainability visible while intervention remains possible.
A threshold must be based on what the intelligence operating model actually requires.
Its warning states must reveal deterioration.
Its breaches must remain visible.
Its recovery must be evidenced.
And its definition must not move merely because the system can no longer satisfy it.
Continued Operation ≠ Sustainability Threshold Satisfaction.
Short-Term Viability ≠ Lifecycle Sustainability.
Threshold Revision ≠ Sustainability Improvement.
A threshold must govern the operating model; the operating model must not redefine the threshold merely to remain compliant.
STM establishes the point at which intelligence stops merely operating and must demonstrate that the conditions supporting its future operation remain sustainable.