AdCOM Protobuf
Advertising Common Object Model (AdCOM) 1.0 is the shared object layer beneath OpenRTB 3.0, OpenDirect and the Ad Management API — media (ads, assets), placement, context (site, app, user, device, geo) and the standard enumerations. Published as five Protocol Buffers files under package com.iabtechlab.adcom.v1 in the IABTechLab/adcom-proto repository.