The MERN stack is a popular framework that integrates JavaScript technologies to facilitate the creation of full-stack web applications. MERN is an acronym for the set of technologies that comprise the stack: MongoDB, Express, React, and Node.js. Web developers have found that its JavaScript-centric approach offers a cohesive development environment for building dynamic web applications, reducing the need for context switching between different programming languages.
Node.js is a powerful technology that has revolutionized web development. It is a runtime environment that has breathed new life into server-side development. Traditional server technologies use a multi-threaded approach, leading to bottlenecks and inefficiencies when handling concurrent connections. Node.js, on the other hand, utilizes an event-driven, non-blocking architecture that makes it a powerhouse for real-time applications and microservices.