Explore the evolution of Python's asyncio and modern JavaScript in this EuroPython 2015 conference talk. Dive into the aio stack, including aiohttp, aioredis, and aiopg, for building contemporary Python backends. Learn about common challenges and solutions when transitioning to asyncio-based development. Discover the latest advancements in frontend development, including ES6 features and their impact on JavaScript. Gain insights into React.js and Flux, and understand their significance for Python developers. Examine a real-world web application that combines the aio stack on the backend with React.js and Flux on the frontend, providing valuable observations for developers interested in cutting-edge web development techniques.