What is Domain-Driven Design? — UK Software Development Guide

4 min readJune 2025ClickMasters Technical TeamReviewed by James Whitmore, CTO
what is domain driven design

Direct Answer

Domain-Driven Design (DDD) is a software design approach that focuses on modelling software around the business domain it serves. Coined by Eric Evans in his 2003 book "Domain-Driven Design: Tackling Complexity in the Heart of Software", DDD provides concepts including: Ubiquitous Language (shared vocabulary between technical and business teams), Bounded Contexts (explicit boundaries within which a model applies), and Aggregates (clusters of domain objects that change together).

Ddd in the UK

DDD is increasingly important in the UK software market — particularly for FinTech, HealthTech, and enterprise software where business complexity is high. UK-specific applications: FinTech systems (accounts, transactions, compliance obligations are natural DDD domains), NHS systems (patient, episode, prescription, referral are clearly bounded contexts), and insurance (policy, claim, underwriting are separate domains with different models). ClickMasters uses DDD for microservices boundary definition — wrong service boundaries are the most common cause of failed microservices migrations.

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