Fiber is a high-performance web framework written in Go, inspired by Node.js's Express, and optimized for building scalable web servers and applications. It leverages the fasthttp package, recognized for its speed, being ten times faster than Go's native net/http package. Fiber offers features such as routing, middleware support, and context handling, making it accessible to developers familiar with Express. The framework is gaining popularity among Go developers and those transitioning from Node.js due to its ease of use, similar architecture to Express, and performance advantages. A demo application using Fiber is detailed, showcasing its capabilities in routing, middleware application, and database interaction, further illustrating its potential in high-speed backend API development. Fiber supports various middleware, allows for efficient route handling, and facilitates quick server setup, demonstrating its appeal for modern web development needs.