AgenticAdvertising.org (AAO) announces the publication of Ad Context Protocol (AdCP) 3.0, expanding the protocol from media buying/signals into a broader advertising lifecycle scope including discovery, planning, execution, governance, identity, and creative workflows. The article describes new elements such as governance checks with audit trails, a machine-readable brand identity file (brand.json), a “Sponsored Intelligence Protocol” for brand sessions in conversational AI, and a creative workflow intended to generate and distribute multi-format assets from a single brief. It also states AdCP 3.0 expands supported channels from 9 to 20 (including linear TV and streaming-related channels) and notes reference implementation governance (Prebid) and planned future work like third-party auditing for AdCP Verified.