Discover how to simplify integration testing using Testcontainers in this 26-minute conference talk. Explore the benefits of Dockerized services for creating repeatable, isolated test environments and learn to leverage the Testcontainers libraries' flexible API for programmatically controlling service dependencies in Docker containers. Gain insights into running databases, Kafka, Elasticsearch, and cloud technologies directly from test code, ensuring consistent environment configurations across local development and CI pipelines. Master the essentials for implementing powerful integration tests without the hassle of manual external service dependency management. The talk covers introduction to integration tests, Docker, Testcontainers, demo applications, and concludes with information on Testcontainers support for various programming languages.