Through a few use cases, this session will explore how to use network traffic data to implement layer-7 application analysis without deploying high-cost devices such as network probes. The analysis should identify top-ranked network applications used by network users, as well as the transmission paths of traffic in the network infrastructure (including CDN). In-depth analysis of top-ranked user applications can be used as best practices for network analysis and management such as reference for revenue strategies, improving user satisfaction, providing EIM (Employee Internet Management) framework, etc.