Nerdy alert! This talk isn't about APIs. It's about how things work and why they were built that way. Behind the components we write every day, React now includes its own scheduler, streaming engine, network protocol, server execution model, compiler, and application architecture patterns. Many developers use these features without fully realizing what's happening under the hood. In this talk we'll uncover the hidden systems that power modern React and explore how the library is transforming into a full application platform.
This talk has been presented at React Day Berlin 2026, check out the latest edition of this React Conference.




















