Single-page apps unlock instant user interactions and highly dynamic user experiences, but as applications get more complex, the price is paid in terms of performance. We either end up with cascading client-server fetches for code and data, or with obscenely large JavaScript bundles to bring in caching solutions. This talk will explore how Streaming architecture is helping applications load much faster by eliminating client-server waterfalls, significantly improving the core web vitals and user experience, and how React is bringing the benefits of Streaming to its declarative component model.