Are you developing complex data-intensive applications using Apache Kafka, Kafka streams, or Apache Pinot? You can learn how to make your testing faster and smarter with Testcontainers. In this talk, we're cutting through the fluff to give developers a straightforward guide on using Testcontainers for data-intensive applications. You'll see how to set up, test, and tear down Kafka and Pinot instances in Docker with ease, ensuring your apps are solid under real-world conditions. This session has practical examples, tips, and tricks to get your testing game on point. Whether a beginner or a seasoned pro, you'll walk away with the know-how to boost your development workflow and make your data-driven apps more reliable. So, let's dive in and start testing smarter!