...
map: MIT Application Platform (map-test-ws1)
cms: content management system
ws: Web Services (map-prod-ws2)
ts: Touchstone (map-dev-ts1)
th: Thalia (cms-proto-th1)
** The previous convention was to use the department name in this spot, such as ISDA. However, these change often, but product or project names change less often. Also note that Athena servers are generally maintained by Server Operations, which has their own naming scheme and set of host organization policies.