Application Implementation Results

Use Case Status

Commands (8 types)

Command	Input VO Composition	Core Flow	Result
RegisterModelCommand	ApplyT(Name, Version, Purpose)	VO composition -> risk classification -> model creation	ModelId
ClassifyModelRiskCommand	RiskTier.Create	Model lookup -> reclassification -> update	—
CreateDeploymentCommand	ApplyT(Url, Env, Drift)	VO composition -> model confirmation -> deployment creation	DeploymentId
SubmitDeploymentForReviewCommand	—	Deployment/model lookup -> eligibility verification -> submit	—
ActivateDeploymentCommand	—	Deployment/assessment lookup -> guard passage -> activate	—
QuarantineDeploymentCommand	—	Deployment lookup -> quarantine	—
InitiateAssessmentCommand	—	Model/deployment lookup -> assessment creation	AssessmentId
ReportIncidentCommand	ApplyT(Severity, Description)	VO composition -> deployment lookup -> incident creation	IncidentId

Queries (7 types)

Query	Port	Filter/Options
GetModelByIdQuery	IModelDetailQuery	Includes deployment/assessment/incident aggregation
SearchModelsQuery	IAIModelQuery	Risk tier filter, pagination
GetDeploymentByIdQuery	IDeploymentDetailQuery	—
SearchDeploymentsQuery	IDeploymentQuery	Status/environment filter, pagination
GetAssessmentByIdQuery	IAssessmentRepository	Includes assessment criteria
GetIncidentByIdQuery	IIncidentRepository	—
SearchIncidentsQuery	IIncidentQuery	Severity/status filter, pagination

Event Handlers (2 types)

Event Handler	Trigger Event	Condition	Action
QuarantineDeploymentOnCriticalIncidentHandler	ModelIncident.ReportedEvent	Severity.RequiresQuarantine	Auto-quarantine deployment
InitiateAssessmentOnRiskUpgradeHandler	AIModel.RiskClassifiedEvent	NewRiskTier.RequiresComplianceAssessment	Create assessments for active deployments

Port Status

Command Ports (4 Repository types)

Port	Base CRUD	Custom Methods
IAIModelRepository	GetById, Create, Update, Delete	Exists(spec), GetByIdIncludingDeleted(id)
IDeploymentRepository	GetById, Create, Update, Delete	Exists(spec), Find(spec)
IAssessmentRepository	GetById, Create, Update, Delete	Exists(spec), Find(spec)
IIncidentRepository	GetById, Create, Update, Delete	Exists(spec), Find(spec)

Query Ports (5 Read Adapter types)

Port	Role
IAIModelQuery	Model list search
IModelDetailQuery	Model detail (including aggregated data)
IDeploymentQuery	Deployment list search
IDeploymentDetailQuery	Deployment detail
IIncidentQuery	Incident list search

External Service Ports (4 types)

Port	Return Type	IO Pattern
IModelHealthCheckService	FinT<IO, HealthCheckResult>	Timeout + Catch
IModelMonitoringService	FinT<IO, DriftReport>	Retry + Schedule
IParallelComplianceCheckService	FinT<IO, ComplianceCheckReport>	Fork + awaitAll
IModelRegistryService	FinT<IO, ModelRegistryEntry>	Bracket

Application layer structure

AiGovernance.Application/
├── Using.cs
├── AssemblyReference.cs
└── Usecases/
    ├── Models/
    │   ├── IAIModelQuery.cs
    │   ├── IModelDetailQuery.cs
    │   ├── Commands/
    │   │   ├── RegisterModelCommand.cs
    │   │   └── ClassifyModelRiskCommand.cs
    │   └── Queries/
    │       ├── GetModelByIdQuery.cs
    │       └── SearchModelsQuery.cs
    ├── Deployments/
    │   ├── IDeploymentQuery.cs
    │   ├── IDeploymentDetailQuery.cs
    │   ├── IModelHealthCheckService.cs
    │   ├── IModelMonitoringService.cs
    │   ├── Commands/
    │   │   ├── CreateDeploymentCommand.cs
    │   │   ├── SubmitDeploymentForReviewCommand.cs
    │   │   ├── ActivateDeploymentCommand.cs
    │   │   └── QuarantineDeploymentCommand.cs
    │   └── Queries/
    │       ├── GetDeploymentByIdQuery.cs
    │       └── SearchDeploymentsQuery.cs
    ├── Assessments/
    │   ├── Commands/
    │   │   └── InitiateAssessmentCommand.cs
    │   ├── Queries/
    │   │   └── GetAssessmentByIdQuery.cs
    │   └── EventHandlers/
    │       └── InitiateAssessmentOnRiskUpgradeHandler.cs
    └── Incidents/
        ├── IIncidentQuery.cs
        ├── Commands/
        │   └── ReportIncidentCommand.cs
        ├── Queries/
        │   ├── GetIncidentByIdQuery.cs
        │   └── SearchIncidentsQuery.cs
        └── EventHandlers/
            └── QuarantineDeploymentOnCriticalIncidentHandler.cs

Applied Patterns Summary

Pattern	Application Count	Example
ApplyT (VO parallel composition)	4	RegisterModel, CreateDeployment, ReportIncident
FinT LINQ (from…in)	8	All Command Handlers
guard (conditional failure)	1	ActivateDeploymentCommand
MustSatisfyValidation	8+	All Validators
IDomainEventHandler	2	QuarantineDeployment, InitiateAssessment
Nested Class	15	All Commands/Queries

268 tests run across 2 assemblies for the entire solution. Application layer code is validated together in unit tests (Architecture rules) and integration tests (Endpoint E2E).

In the next step, we define the Adapter layer implementing these ports in Adapter Technical Requirements.