Front-end development involves creating the user interface and user experience of a website or application. This includes designing and implementing the visual elements, such as layouts, buttons, and menus, as well as ensuring the functionality and responsiveness of the site or app across different devices and platforms. Front-end developers typically use technologies such as HTML, CSS, and JavaScript, and frameworks such as React, Angular, and Vue.js, to create dynamic and engaging user interfaces. Good front-end development is crucial for enhancing the user experience and driving user engagement and conversion rates.