The Network Information Service provides an easy-to-manage general
purpose distributed database system. When used in conjunction with a
source code control system and local tools, it solves many problems
with configuration file management by providing audit trails and a
single point of administration. The single biggest advantage of NIS
is that it adds consistency to a network. Getting all hosts to agree
on usernames, uid and gid values, and hostnames and host addresses is
a prerequisite for adding other distributed services such as NFS.
5.5. Migrating from NIS to DNS for host naming
6. System Administration Using the Network File System