In this AWS re:Invent 2022 session, Stephen Ledig, a principal serverless specialist Solutions architect, explores the design of event-driven integrations using Amazon EventBridge. The presentation focuses on understanding the core concepts of using a serverless event bus for integration strategies across organizations. Ledig discusses key themes such as coupling in distributed systems, choosing appropriate events, and the roles of producers and consumers in EventBridge architectures. He examines different event bus topologies, including single-bus and multi-bus approaches across multiple accounts, highlighting their similarities, differences, and implications for resource management. The talk also covers important aspects like event immutability, types of events, and best practices for naming conventions and metadata handling. Ledig emphasizes the importance of governance, observability, and discovery in event-driven architectures, providing insights into tools and strategies for managing complex, distributed systems effectively.