Explore interactive data visualization web app development using Dash, a Python framework that requires no JavaScript knowledge. Learn how to create rich, browser-based tools for data exploration and result presentation in this 32-minute EuroPython Conference talk. Discover the advantages of Dash for data scientists and machine learning projects, best practices for effective implementation, and common pitfalls to avoid. Gain insights into organizing applications, optimizing performance, and determining when to transition from Dash to traditional web development. Understand the balance between rapid UI development and potential technical debt, and explore topics such as authentication, testing, and multi-page applications.