Explore a comprehensive conference talk on refactoring monolithic systems into distributed architectures. Delve into common patterns of interaction within monoliths and the challenges that arise when directly applying these patterns to distributed systems. Examine a concrete sample of monolithic module interactions, identifying potential issues in distributed environments. Discover alternative implementation approaches that enhance modularity in monoliths and minimize complications when transitioning to a system of systems. Learn about modeling aggregates, strong consistency, order management in microservices, and handling identity and events in distributed architectures. Gain insights from Oliver Gierke, lead of the Spring Data project at Pivotal, Java Champion, and JPA expert, as he shares his extensive experience in enterprise application development and open source projects.