What is Event-Driven Architecture? — UK Software Development Guide
Direct Answer
Event-Driven Architecture (EDA) is a software design pattern where components communicate through events — notifications that something has happened. Producers emit events; consumers react to events they are interested in. This decoupling enables components to evolve independently and supports scalable, loosely-coupled systems.
Event-driven-architecture in the UK
Event-Driven Architecture has specific UK regulatory implications. FCA operational resilience requirements for FinTechs benefit from EDA — event streams provide natural audit trails for regulatory reporting. NHS FHIR Subscriptions use event-driven patterns to notify systems of patient record changes. UK GDPR Article 32 audit logging requirements are naturally satisfied by event streams — every action produces a GDPR-auditable event. ClickMasters uses Kafka (for high-volume FinTech/HealthTech) and RabbitMQ or AWS SQS (for standard SaaS applications) depending on throughput requirements.
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