What Is React and Why Do Companies Adopt It?

What is React, and why has it become one of the go-to technologies for building modern web interfaces? So many companies now adopt it for their digital projects that it's worth understanding what actually sets it apart from other options before making a decision of your own.

A library built for dynamic interfaces

React is an open-source JavaScript library, created by Meta, dedicated to building user interfaces. It's based on a component approach: every interface element, such as a button, a form, or a list, becomes a reusable component, which makes visual consistency and code maintenance easier as the project grows over time. Thanks to its virtual DOM, React also optimizes how the display updates, resulting in smooth interfaces even in data-rich applications with frequent changes.

Why companies choose React

• A very large ecosystem of libraries and tools that speeds up development significantly
• An active community that makes it easier to recruit developers already trained in this technology
• A natural fit with React Native to extend a project into mobile without starting over
• A good match for highly interactive interfaces, such as dashboards or SaaS applications

Where React is particularly relevant

React is especially well suited to projects requiring a rich user experience, with frequent content updates that don't reload the page: SaaS platforms, internal tools, and data management interfaces. For simpler sites with little interactivity, a lighter solution can sometimes be enough, and choosing React there may add unnecessary complexity.

React and the extension into mobile

One advantage companies often cite when adopting React is the ability to naturally extend their skills into mobile through React Native. A team already trained in React can develop an iOS and Android app while reusing part of its knowledge and, sometimes, part of the business logic already built for the web, which reduces friction when growing a product's scope.

React and developer recruitment

React's popularity also makes hiring easier: many front-end developers train in this technology, which widens the pool of available profiles, whether freelance or agency-based. This availability of skills is an additional argument for companies looking to limit the risks of depending on a single profile. To go further, read our complete guide to React and React Native, the dedicated blog section, and the React projects published on the platform.