MediaChannel:
| "display"
| "olv"
| "social"
| "search"
| "ctv"
| "linear_tv"
| "radio"
| "streaming_audio"
| "podcast"
| "dooh"
| "ooh"
| "print"
| "cinema"
| "email"
| "gaming"
| "retail_media"
| "influencer"
| "affiliate"
| "product_placement"
| "sponsored_intelligence"
Standardized advertising media channels describing how buyers allocate budget. Channels are planning abstractions, not technical substrates. See the Media Channel Taxonomy specification for detailed definitions.