Implementing Event-Driven Architecture in PHP

Event-driven architecture traditionally moves routing logic outside application code into message brokers, creating "dumb endpoints" that are hard to test and maintain. The Smart Endpoints, Dumb Pipes approach reverses this by keeping routing logic inside applications using messaging abstractions. The Ecotone Framework for PHP implements this through a Service Map feature that allows developers to configure command and event routing within code, making integrations testable and maintainable. The framework supports multiple message brokers (RabbitMQ, Kafka, SQS, Redis) as simple transport layers while keeping orchestration logic in the application, enabling decoupled data models and comprehensive testing capabilities.