Global AI Forum's map of the real-time voice AI agent stack, placed at the layer each company operates at, not the layer it sells at. Infrastructure covers orchestration & runtime, speech-to-speech, reasoning, text-to-speech, speech recognition, audio & turn detection, telephony & transport, evaluation & observability. The application layer spans healthcare, financial services, enterprise customer service, contact centre incumbents, recruiting, home services, sales, restaurants, auto dealerships, real estate, logistics, government/emergency, and India. 308 companies analysed as of September 2026, featured in MarketMapMondays #91: Voice AI and India.