Explore the importance of metrics in building and supporting open source communities in this 26-minute talk presented by Georg Link and Emilio Galeano Gryciuk from Bitergia. Delve into the reasons behind open source adoption and understand the concept of Chaos Metrics. Examine various metric examples and learn how to address both organizational and technical challenges in implementing these metrics. Discover techniques for enriching data, managing identities, and calculating metrics effectively. Gain insights on making data useful for decision-making and community growth. Conclude with a comprehensive summary of key takeaways for leveraging metrics to strengthen open source communities.