The core principles of user-centered design include a focus on user needs, iterative design processes, and usability testing. This design approach places users at the forefront, ensuring that their preferences and requirements drive the development process. By gathering feedback through user research and testing, designers can create intuitive and effective products. Prototyping and iterations are critical, allowing for constant refinement based on real user interactions and experiences. Ultimately, user-centered design aims to enhance overall satisfaction and usability, resulting in a more successful product.