Slightly higher stability than Ubuntu
Has a different package manager (
Slightly smaller package ecosystem, made up for by large 3rd party repositories.
A lot of backported packages including the kernel
We use Netboot to install it
All of the system configuration and log files are named slightly differently than Ubuntu, making things slightly annoying.
CentOS actually beats out Ubuntu in how old its Python is; there is no Python 3, only Python 2.7.5 in the official repository!
You can pry my CentOS-specific Ansible plays from my cold, graduated hands.