This solution brief outlines the Differential Diagnosis (DDx) tool designed to enhance troubleshooting processes in modern systems. It addresses the challenges faced by teams due to system complexity and the overwhelming volume of telemetry data. The brief explains how DDx automates the analysis of metrics and traces, highlighting correlations and providing context to performance issues. It describes the queryless workflow that allows users to conduct hypothesis testing without needing prior system knowledge. Additionally, the brief emphasizes that DDx eliminates reliance on tribal knowledge, enabling all team members to troubleshoot effectively, regardless of their experience level. The solution aims to streamline investigations, reduce cognitive overload, and facilitate faster, more consistent problem resolution. By automating expert-level investigation techniques, DDx empowers teams to identify and resolve issues quickly, ultimately improving operational efficiency.