Segregated Event Layers is a pattern for decoupling distributed systems by keeping internal domain events strictly private and using an adapter (Projector) to emit a separate, purpose-built public event stream. The public stream forms its own Bounded Context with its own language, event types, and names — effectively implementing an Anti-Corruption Layer. This prevents consumers from coupling to internal implementation details and allows the public API to be tailored to client needs (e.g., Summary Events or Fat Events) without polluting the core domain model. The pattern can be extended to create per-consumer adapters and streams.
