React.js is ideal for building single page, SEO friendly web applications with content that updates dynamically based on user input or other data sources.
React.js is a clever approach to UI design that allows developers to create reusable components which makes for a smarter application architecture and reduces development time. These components keep the UI consistent for the user and allows developers to reuse code when adding new features or services to the application leading to a more stable architecture.
React.js web applications can be turned into mobile apps using the React Native library with relative ease.
Many of the apps we use often are built on React.js such as Netflix, Facebook, and Instagram just to name a few.