This document discusses the evolution of DevOps tools at AppsFlyer. It notes that AppsFlyer processes around 4.9 billion events per day across 120 services running on elastic computing resources. It has a single development team of 25 people that builds tools to meet operational needs, extend existing tools, learn new technologies, and improve collaboration between development and operations teams. Two examples of internally developed tools that will be demonstrated are Sniffer, a mapping tool, and Sensu Reports, which aggregates reports from the Sensu monitoring system.