Android is an open-source, Linux-based operating system designed for touchscreen devices. It includes an operating system, middleware, and key applications. Android apps are developed using Java and available in the Google Play Store. The Android platform allows apps to run across various hardware configurations and has an intuitive touch interface that responds to user input. It supports wireless communication technologies and multiple programming languages. Some advantages are customization ability and access to many apps. Disadvantages include needing an internet connection and potential for malware and privacy issues. Android's success stems from its open source nature, support from the Open Handset Alliance, large developer community, and built-in services.