This weekly roundup from April 2015 highlights updates and events related to the ELK Stack, including Elasticsearch, Logstash, and Kibana. It features the release of Elasticsearch versions 1.5.2 and 1.4.5, which addressed a directory traversal vulnerability, and the introduction of search capabilities across multiple models in the Ruby on Rails integration library. The roundup also includes insights into Verizon's use of Elasticsearch for handling 20 billion documents a day, community contributions like Nathan LeClaire's guide on automating Docker logging with the ELK stack, and Robin Moffat's analysis of open data using Kibana 4. It outlines various presentations and meetups worldwide, such as those in Algiers, Melbourne, Vienna, Paris, and several cities in the United States, offering insights into topics like securing Elasticsearch, scaling Logstash, and real-time search analytics. Additionally, training sessions led by core developers on Elasticsearch are scheduled in cities across the globe, from Copenhagen to Bangalore, providing opportunities for hands-on learning.