What tools can perform the activity? Some activities, such as creating a new user mailbox, can be performed from EMC, the EMS, or the ECP, whereas others, such as creating a new room mailbox, can be accomplished only in the EMC and the EMS.

Which tool is most convenient for the task? If creating a new mailbox user, it might be easier to simply log on through a browser and create the account, whereas creating 100 new accounts would be easier using a script in the EMS.