The 2019 Elastic Advent Calendar concluded with a series of 25 articles exploring a wide range of topics related to the Elastic Stack, including Elasticsearch, Python, Auditbeat, ECS, JVM options, anomaly detection models, and SSL configuration. The series featured contributions from various authors in multiple languages, such as Finnish, Spanish, German, and French, and covered practical applications like monitoring Linux commands with Auditbeat, using Elasticsearch for email activity processing, and simplifying ingest pipelines with the new enrich processor. The articles provided insights into the latest features and improvements in Elasticsearch and Kibana, offering readers a comprehensive understanding of data handling and analysis tools available in the Elastic ecosystem. The series encouraged interaction and ongoing discussion on the Elastic Discuss Forums, inviting feedback and suggestions for future content while expressing optimism for continued innovation and community engagement in 2020.