Happy birthday APFS, 7 years old today

Seven years ago, on 27 March 2017, Apple introduced one of the most fundamental changes in its operating systems since Mac OS X 10.0 Cheetah was released 16 years earlier. On that day, those who updated iOS to version 10.3 had their iPhone’s storage silently converted to the first release of Apple File System, APFS. Six months later, with the release of macOS 10.13 High Sierra on 25 September, Mac users followed suit.
↫ Howard Oakley

The migration from HFS+ to APFS is still an amazing feat for Apple to have pulled off. Hundreds of millions devices converted from one filesystem to another, and barely anyone noticed – no matter how you look at it, that’s an impressive achievement, and the engineers who made it possible deserve all the praise they’re getting.