Discover how to streamline and automate performance tuning for Apache Spark in this 41-minute conference talk by Jean Yves Stephan from Data Mechanics. Learn about the challenges of maintaining efficient and stable data pipelines in production, including selecting appropriate infrastructure, configuring Spark correctly, and ensuring scalability as data volumes grow. Explore the key information and parameters for manual tuning, and delve into various automation options, from open-source tools to managed services. Gain insights into common issues like lack of parallelism, shuffle spill, and data skew, and understand how to leverage node metrics for improvements. The talk covers the iterative nature of performance tuning, cost-speed trade-offs, and the architecture and algorithms behind automated tuning tools. By the end, you'll have a comprehensive understanding of how to optimize your Spark applications and meet SLAs efficiently, even as you scale to hundreds or thousands of jobs.