This week in Elastic offers a comprehensive update on the ELK Stack, focusing on Elasticsearch, Logstash, and Kibana, along with related events and training opportunities worldwide. The newsletter highlights the release of Elasticsearch 1.5.1, which includes important bug fixes, and features guest posts and tutorials on scaling Elasticsearch and its integration within the Apache Hadoop ecosystem. The document also mentions numerous meetups and conferences across the globe, where enthusiasts and developers can explore the latest innovations and applications of Elasticsearch, including its use in civic hacking and government analytics. Additionally, it promotes upcoming training sessions in various cities, providing hands-on workshops and core Elasticsearch courses facilitated by the core developers, and invites community members to participate in events and share their experiences with the ELK Stack.