Ruby is a high-level and dynamic programming language. It is designed to be both concise and efficient, allowing developers to easily create powerful web applications. It is well supported by a large library of gems, which are modules that can be used to quickly add functionality to applications. Ruby is known for its scalability and elegance, and is often used as the server side language in web application stacks.
This combination of React and Ruby provides a powerful and efficient stack for creating modern web applications. React takes care of the front-end user experience, while Ruby handles the server side processing. Together they enable developers to create powerful, dynamic and responsive web applications with ease.