Explore strategies for modernizing legacy monoliths in this RailsConf 2023 talk. Learn how to apply microservices patterns to a modular monolith approach, focusing on ensuring data consistency and managing distributed transactions. Discover insights and potential pitfalls from the speaker's experience, covering topics such as atomicity, persistent events, and the implementation of outbox patterns using Kafka. Gain practical knowledge on member creation processes, rollback mechanisms, and effective techniques for dealing with technical debt in large-scale Ruby on Rails applications.