In this post, we build a real-time monitoring dashboard using Next.js, a React framework that supports server-side rendering, static site generation, and full-stack capabilities with built-in performance optimizations. Similar to the Streamlit app we developed in Part 2, this dashboard connects to the WebSocket server from Part 1 to continuously fetch and visualize key metrics such as order counts, sales data, and revenue by traffic source and country. With interactive bar charts and dynamic metrics, users can monitor sales trends and other critical business KPIs in real-time.