Explore reactive programming through a practical demonstration in this conference talk from Spring I/O 2019. Discover how to convert a simple yet realistic Java application from imperative to reactive using Spring's support for reactive streams. Learn about the building blocks of reactor and follow the journey to a fully functional reactive application. Gain valuable insights and hard-won wisdom as the speaker strikes a balance between simplicity and real-world applicability, ensuring both beginners and experienced developers can grasp the concepts. Whether you're curious about reactive programming or tasked with implementing it, acquire the knowledge needed to confidently transition your projects from imperative to reactive paradigms.