Web development involves creating and maintaining websites. It encompasses front-end development, which focuses on the visual elements users interact with, and back-end development, managing server-side logic and databases. Adobe Photoshop skills are crucial for web developers as they enable creation and editing of graphics and images used in web design. Proficiency in Photoshop allows developers to optimize images for web, design website layouts, and enhance user interfaces, ensuring visually appealing and functional websites. Mastering these skills is essential for a successful career in web development, combining technical expertise with creative design abilities.