Explore the concept of lazy evaluation and its impact on scalability and efficiency in this 59-minute conference talk by Venkat Subramaniam at JetBrains Technology Day for Java. Discover how laziness can be a smart solution for big data and highly responsive applications facing increasing demands for speed and short response times. Learn about lazy evaluation, data structures, and APIs that promote lazy execution, and understand their connection to improved scalability and efficiency. Dive into topics such as collections and laziness, infinite streams, reactive programming, parallel streams, and real-world use cases. Gain insights into performance problems, exception handling, and the side effects of functional programming. Download IntelliJ IDEA and explore the top 15 shortcuts to enhance your Java development experience.