SignalUp measures AI visibility by asking real buyer questions across the AI engines we monitor (ChatGPT, Claude, Gemini, Perplexity, Google AI Overviews, DeepSeek, and Grok), recording which brands are named, cited, and recommended, and computing competitive Share of Voice with measured before/after. Technical alignment covers crawler guidance (robots.txt + llms.txt), JSON-LD structured data, and content the engines can parse and cite. Additive to SEO — not a substitute.