ACCELERATOR · BLUEPRINTS

Domain-Driven Design

Align your system boundaries to your business domains so that software and organisation evolve together.

The Domain-Driven Design blueprint provides a structured approach to decomposing complex financial services domains into well-defined bounded contexts, aggregates and domain events. It bridges the gap between strategic business modelling and tactical software design, producing service boundaries that are stable under change and comprehensible to both engineers and domain experts.

provenAvailable

Key Features

Context Mapping Workshop Framework

A facilitated discovery process that brings together domain experts and engineers to identify bounded contexts, their relationships (upstream/downstream, conformist, anti-corruption layer) and integration patterns.

Aggregate and Entity Modelling

Tactical design patterns for defining aggregate roots, value objects and invariants within each bounded context, ensuring transactional consistency without distributed coupling.

Domain Event Catalogue

A structured catalogue of domain events that cross context boundaries, forming the contract layer for event-driven integration between services.

Ubiquitous Language Glossary

A living glossary co-authored with business stakeholders that anchors technical naming to domain terminology, reducing miscommunication between product, risk and engineering teams.

Use Cases

Credit Decisioning Platform Decomposition

Banking

Modelling the lending domain into bounded contexts for applications, products, scoring, limits, decisions and fulfilment, enabling independent evolution of credit policy and customer journeys.

Economic Crime Platform Design

Financial Services

Identifying bounded contexts for transaction monitoring, sanctions screening, case management and regulatory reporting within a financial crime prevention programme.

ISO 20022 Payments Domain Model

Payments

Mapping ISO 20022 message domains (pain, pacs, camt) to bounded contexts that align with internal payments processing, reconciliation and reporting responsibilities.

Technical Stack

Event Storming (collaborative modelling)Context Mapping DSLMiro / FigJam (workshop facilitation)Kotlin / Java (tactical implementation)PlantUML / Structurizr (architecture diagrams)

Deliverables

  • →
    Context Map and Bounded Context Definitions(Architecture document)
  • →
    Aggregate Design Specifications(Design document)
  • →
    Domain Event Catalogue(Technical specification)
  • →
    Ubiquitous Language Glossary(Reference document)

Expected Programme Outcomes

Time

8–10 weeks

saved on domain discovery

Risk & Compliance

85%+

domain boundary consistency

Cost

4–6 months

of boundary rework avoided

Quality

95%+

shared ubiquitous language adoption

Prerequisites

  • →Access to domain experts and product owners for workshop participation
  • →High-level understanding of target business capabilities
  • →Willingness to let domain boundaries drive service boundaries

Proven in

Case studies that used this accelerator.

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