Which component of web development is responsible for ensuring a user-friendly interface?

Front-end development is crucial for creating a user-friendly interface because it encompasses the elements of a website that users interact with directly. This includes the layout, design, and overall aesthetics of web pages, as well as the functionality that allows users to navigate the site easily. Front-end developers use HTML, CSS, and JavaScript to build responsive, intuitive interfaces that enhance the user experience. They focus on ensuring that the website is accessible, visually appealing, and easy to use across various devices and screen sizes.

In contrast, back-end development focuses on server-side logic, database interactions, and application performance, while database management deals with data storage and retrieval. Network configuration relates to the infrastructure that supports the web application but does not impact the user experience directly. Each of these components is vital to a functioning web application, but front-end development specifically aims at addressing the user interface and experience directly, making it the key element in ensuring user-friendliness.