What tools and technology would you use to remotely manage servers?

While working on the homework assignment, the differences between servers and desktops will become more obvious. What tools and technology would you use to remotely manage servers? These may be the same as those used with desktops or completely different. Discuss with the other students how you would manage one remote server, 10 remote servers, and 1,000 remote servers. Make sure to think about out-of-band management along with management through remote protocols such as remote desktop and ssh.