Frontend development refers to the process of building the visual and interactive elements of a website or web application that users interact with directly. It involves using languages such as HTML, CSS, and JavaScript to create a seamless and engaging user experience.

A responsive design ensures that your website adapts to different screen sizes and devices, providing a consistent and user-friendly experience. This is crucial in today's diverse digital landscape where users access websites on various devices like smartphones, tablets, and desktops.

A Single-Page Application is a web application or site that interacts with the user by dynamically rewriting the current page rather than loading entire new pages from the server. SPAs provide a smoother, more app-like experience by reducing page reloads.

A Progressive Web App (PWA) is a type of web application that leverages modern web technologies to provide a more app-like experience to users. PWAs combine the best features of both web and mobile applications, offering responsiveness, offline capabilities, and push notifications.

Static frontends present unchanging content, suitable for simpler scenarios like personal blogs. In contrast, dynamic frontends offer an interactive and personalized user experience, adapting content in real-time based on user interactions or external data. Examples include social media platforms and e-commerce websites, showcasing the versatility of dynamic frontends for engaging, ever-changing content.