While Apache Flink excels at low-latency stream processing, achieving optimal end-to-end performance often requires specialized tuning beyond standard configurations. This session dives deep into critical best practices and advanced techniques for drastically reducing latency in Flink applications, ensuring your pipelines operate at peak efficiency. Attendees will explore direct latency optimizations, including resource allocation, state backend choices, and network buffer tuning, alongside strategies to improve throughput that inherently enhance real-time responsiveness. The talk provides a battle-tested blueprint for understanding, measuring, and systematically eliminating bottlenecks, empowering engineers to build truly high-performance Flink solutions.