The popularity of the MERN stack development has grown significantly in recent years. The MERN stack is one of the two popular JavaScript stacks, along with the MEAN stack, and is used to develop single-page dynamic web applications. While I am a big fan of Java + Spring Boot stack, if I have to choose a non-Java stack then I always go for MERN stack because of React.js. This is one of the modern framework which completely changed how you create frontend in JavaScript and that's why more and more companies are using React.js and MERN stack for their web app development.