App development is the process of creating software applications for mobile devices, tablets, or computers. It involves several stages, including planning, designing, coding, testing, and launching the app. Developers use various programming languages and tools to build apps that can perform specific tasks or provide services to users. The app development process often includes collaboration among different professionals, such as software developers, UI/UX designers, and project managers. Once an app is developed, it is typically published on platforms like the Apple App Store or Google Play Store, where users can download and install it on their devices.