Are you referring to any Particular DSP Partner ?
It is different for different DSP/Exchange Partners.
Is your question related to realtime audiences or batch ?
If it is related to real time, then are you asking in context of how much time does it take to target real time audience after mapping of segments to that s2s destination?
If it is related to batch data, then incremental sync to send batch file is different for different partners. For most of the partners it is 12 hours and for some of them it is 24 hours.
I am trying to ingest audience data in real time.