Windows uses this event ID for both successful and failed service ticket requests. If it is a failure event see Failure Code: below.
Whereas event ID 4768 lets you track initial logons through the granting of TGTs, this lets you monitor the granting of service tickets. Service tickets are obtained whenever a user or computer accesses a server on the network. For example, when a user maps a drive to a file server, the resulting service ticket request generates event ID 4769 on the DC.
The New Logon fields indicate the account for whom the new logon was created, i.e. the account that was logged on.
The network fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.
The impersonation level field indicates the extent to which a process in the logon session can impersonate.