Explore the evolution and applications of EROFS (Extendable Read-Only File System) in this comprehensive conference talk. Discover how EROFS has become a recommended file system for Android system partitions since its introduction to Linux kernel 5.4 in 2019. Learn about new features in recent kernel versions, including global compressed data deduplication. Delve into EROFS's rapid adaptation to the container world, examining innovations like EROFS over fscache for runC containers, EROFS DAX support for secure containers, and EROFS TarFS use cases for confidential containers. Gain insights into the technical details of these advancements and get a glimpse of the EROFS filesystem's future development roadmap.