V3 DDD Architecture

To decompose a monolithic orchestrator with domain-driven design, you split the god-object into cohesive domains using bounded contexts, define clear interfaces, and apply a microkernel pattern to enable modular, testable code with independent domain evolution.

The microkernel pattern is an architectural style that enables modular plug-ins and independent domain evolution without touching core code. You need it when splitting a monolithic orchestrator into bounded contexts that require scalable, testable separation.

To migrate a monolithic codebase to domain-driven design, follow a phased plan to extract domains, map bounded contexts, and wire domain events. This ensures clean architecture separation with robust testing and migration guidance at each phase.

The best way to define bounded contexts for a complex orchestrator is analyzing the current architecture to split the god-object into cohesive domains with clear interfaces, then applying domain-driven design principles to establish boundaries and configure modular contexts.

Yes, you can use domain events and plugin integration with a microkernel pattern. Domain-driven design decomposition explicitly satisfies requirements for plugin integration and domain events while the microkernel enables modular plug-ins without touching core code.

You should not use domain-driven design decomposition when the orchestrator lacks complex domain logic requiring bounded contexts, as DDD adds architectural overhead. If the codebase is small or domains are tightly coupled without clear boundaries, a monolithic structure may remain more testable.