Application administrator

Person responsible for keeping an application running successfully. The administrator is authorized to use all administrative tools and all MIB administrative capabilities. The administrator configures, manages, and modifies a running production application.

System operator

Person responsible for monitoring and reacting to the daily operation of a production application. An operator monitors statistics about a running application, sometimes reacting to events and alerts by taking actions such as booting servers or shutting down machines. An operator does not reconfigure an application, add servers or machines, or delete machines.

Other

People or processes (such as custom programs) that may need to read the MIB but are not authorized to change the application.