====== 8. Navigation Guidance ====== [[fxdemo:00-part:start | Go to Top ]] Readers should select the part that best answers the question they are trying to answer. Table 8-1: Navigation guide for selecting the appropriate document part ^ Question ^ Read ^ | What are the durable financial system concepts? | Part 1: Conceptual Architecture | | What is the platform-independent logical model? | Part 2: Logical Architecture / PIM | | How does the model apply to Foreign Exchange? | Part 3: FX Demo Logical Profile | | How does Phase 0 map the logical model to DDS, IDL, Python, and container images? | Part 4: Phase 0 Implementation Profile / PSM | | How does Phase 0 run, deploy, test, and collect evidence? | Part 5: Phase 0 Deployment, Testability, and Evidence Plan | A reader should not begin with Part 5 to understand the architecture. Part 5 explains how one implementation runs. It does not define the conceptual or logical architecture. A developer working on Phase 0 may spend most of their time in Parts 4 and 5. An architect reviewing the separation of concerns should begin with Parts 1 and 2. A domain reviewer focused on FX should begin with Part 3. A reviewer assessing evidence should use Part 5 while tracing claims back through Parts 4, 3, 2, and 1. ---- © 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.