The WordPress REST API was merged into core three years ago, laying the foundation for the Gutenberg editor and dozens of other new interfaces in many of the most popular WordPress plugins. What parts of the API have changed since that initial release in WordPress 4.7, and what has stood the test of time? What new features can we expect to see in the REST API in 2020 and beyond? In this talk I’ll share a component maintainer’s perspective on the API project and where it’s going next, including an honest assessment of what’s worked and what hasn’t in the first three years of the API’s life in core. We’ll look at some new API features that can help your applications become faster and more efficient, and close with an overview of how this key part of WordPress gets maintained—including how we can all get involved!