High-Level Architecture

Lifecycle phases & responsibility layers of the IOA-ORM assessment pipeline

1 · Design Time

Authoring Studio

Exam Flow Design

Lecturers define rubrics, policies, evidence targets, and node graphs

compiles to

2 · Shared Contract (Artifact)

IOA-ORM

ExamRuntimePackage

Versioned, immutable specification · Single source of truth

loads policies & compiles config

3 · Run Time (Live Assessment)

Candidate UI

Frontend Exam Room

Audio · Commands · Transcript display

Control Plane

Config Compiler

Execution Adapter

IR → engine config

Policy Enforcement

Runtime Controller

State machine · Guardrails · Evidence writes · Transition approval

commands / interrupts / state callbacks

Execution Engine

Voice Runtime

STT · LLM · TTS · Dialogue Pipeline

emits events & signals

4 · State & Storage

Event Store

Runtime Events

Audit trail · Analytics · Session replay

Evidence Ledger

Evidence Signals

Structured evidence · Provenance · Confidence

consumes structured evidence

5 · Post-Exam (Marking)

Marking Runtime

Scores & Reports

Reads evidence ledger · Produces assessment outcomes

Design-time system

Static artifact

Runtime component

Client

Storage

Config / data flow

Real-time interaction