Hapi is a powerful framework for building web applications and APIs in Node.js. It offers a rich set of features, including input validation, error handling, and plugin-based architecture, which enhances modularity and reusability. Hapi is widely recognized for its focus on security, providing built-in support for authentication and other security best practices. Its ability to handle complex applications with custom requirements makes it a popular choice for enterprise-grade solutions. Hapi's flexible configuration options empower developers to design scalable and maintainable server-side applications.