Context API
Context API is a built-in feature in React that provides a way to pass data through the component tree without having to pass props down manually at every level. It allows developers to share state and other values globally across components, making it easier to manage data in large applications. This is particularly useful for themes, user authentication, or language preferences that many components need to access.
Developers should learn Context API when building React applications with deeply nested components where prop drilling becomes cumbersome and error-prone. It's ideal for managing global state in small to medium-sized apps, such as user authentication status or theme settings, without the overhead of external state management libraries. Use it when you need a simple, lightweight solution for sharing data across multiple components without complex setup.