Explore the power of Bokeh, a Python interactive visualization library for large datasets, in this comprehensive conference talk from EuroPython 2015. Delve into the library's design, examining its various API layers from bottom to top. Discover how Bokeh leverages the latest web technologies to create elegant, concise graphics in the style of Protovis/D3 while delivering high-performance interactivity for large datasets to thin clients. Gain insights into the features that make Bokeh both powerful and user-friendly through an extensive showcase of examples. Learn how to create beautiful, interactive visualizations for big data directly in the browser using this versatile tool.