Android app development allows businesses to create mobile applications that run on devices using the Android operating system. Android apps are developed using languages like Java, Kotlin, and C++ and compiled using Android SDK tools. The final build outputs an .apk file that can be installed on any Android device. Common app components include activities, services, content providers, intents, broadcast receivers, widgets and notifications. Popular types of Android apps include e-commerce, location tracking, CRM, education, travel, business and healthcare apps. As mobile device usage grows, businesses are recognizing the importance of developing mobile apps to engage customers and improve internal processes.