AI Insider reports that Profound, which builds marketing software to help brands surface inside AI search results, has raised a $180 million Series D at a $1.8 billion valuation. Sequoia and Kleiner Perkins led the round, with Lightspeed, Khosla Ventures and South Park Commons also participating. It comes less than seven months after a $96 million Series C. Profound began as an analytics platform and expanded into helping companies build strategies for what the industry calls generative or answer engine optimization: making sure products appear when someone asks a chatbot instead of typing into a search engine. The company says revenue tripled over the past six months and that it now serves more than 1,000 enterprise customers, naming Comcast, Estee Lauder and Walmart.