eMMC, or embedded MultiMediaCard, is a type of flash storage commonly used in smartphones, tablets, and other electronic devices. It combines a controller and memory into a single package, allowing for faster data access and improved performance compared to traditional storage methods. This technology is often used for system storage, where the operating system and applications are installed. eMMC is cost-effective and provides a compact solution, making it ideal for devices with limited space. However, it generally offers lower performance compared to more advanced storage options like UFS (Universal Flash Storage).