(CoreOS employee, would love to hear other opinions) Three main things: 1. everything that systemd provides (dependency chain, common logging, cgroup manageme

(CoreOS employee, would love to hear other opinions) Three main things: 1. everything that systemd provides (dependency chain, common logging, cgroup management, socket activation, timers) 2. designed for sane management from 1 to 1000s of machines. Easy PXE booting, etc. 3. self-updating (you can turn this off!). State of the art for servers is "never touch it again" or a multi-day fire drill to patch hundreds of systems for the next heartbleed. Basically, CoreOS should remove a lot of the tedious upkeep tasks from your ops team so they can focus on moving your infrastructure forward.