Google's Marketing Live 2026 reveals Gemini is no longer a feature — it's the operational layer coordinating Google's entire ecosystem. The Gist Gemini as the operating system: Google is positioning Gemini not as a feature but as the connective intelligence layer coordinating campaigns, measurement, commerce and customer engagement across its entire marketing ecosystem. Search ads go conversational: New Conversational Discovery ads and Highlighted Answers formats use Gemini to match ad creative dynamically to query intent, moving advertising from keyword placement into AI-assisted discovery workflows. Commerce gets unified rails: The Universal Commerce Protocol now extends into YouTube Shopping ads and Demand Gen campaigns, enabling persistent cart experiences and native checkout while Google says retailers remain merchant of record.…