User experience (UX) design is a crucial part of product development that focuses on enhancing user interactions and making the user journey intuitive, efficient, and easy. Good UX design impacts business objectives such as increasing user satisfaction, improving conversion and retention rates, and strengthening product-market fit. UX design differs from UI design and web design in its focus on function and experience rather than visual elements or overall website aesthetics. Key UX design best practices include keeping the user at the forefront, making everything accessible, being consistent, empowering users, and being iterative and responsive. The UX design process typically involves research, building wireframes and prototypes, testing, and iterating based on feedback.