The second week of the Elastic Advent Calendar 2020 offers a diverse array of topics, highlighting advancements and educational opportunities within the Elastic ecosystem. The week features posts on optimizing e-commerce search with Elasticsearch rank features, using Rust for mapping Christmas tree disposal locations in Kibana, and reviewing the top new features in Kibana Maps since its general availability release. Additionally, it includes guidance on expanding Elastic skills during the holiday season, mapping infrastructure data using the Elastic Stack, customizing user experiences with signed search keys in App Search, and achieving Elastic certification, with specific insights for engineers in China. This series not only showcases innovative uses of Elastic products but also serves as a resource for users looking to deepen their understanding and application of these technologies.