Discover the importance of implementing a service layer in your Rails application in this insightful conference talk from RailsConf 2022. Learn why placing business logic in a service layer, rather than in Active Records, can significantly enhance your app's sustainability. Explore how this simple design decision creates a crucial seam between the user interface and database, encapsulating the core functionality that defines your app. Gain practical knowledge on how to initiate a service layer immediately, without the need for complex patterns, principles, or specialized libraries. This presentation offers valuable insights for Rails developers looking to improve their application architecture and maintain code sustainability over time.