FAT32, or File Allocation Table 32, is a file system format that allows for the storage and organization of files on various storage devices. It is widely used due to its compatibility with multiple operating systems, including Windows, macOS, and Linux. FAT32 supports drives up to 2TB in size and individual files up to 4GB, making it suitable for many applications. Despite its limitations, FAT32 remains popular for USB flash drives and external hard drives because of its simplicity and ease of use. It is particularly beneficial for users who need to transfer files between different systems without compatibility issues, ensuring seamless data access across devices.