Answer Engine
An AI system that answers a question directly instead of returning a list of links.
What is an answer engine?
An answer engine is an AI system that responds to a query with a direct, synthesised answer — and increasingly its source citations — instead of returning a ranked list of links for the user to click through.
The answer engine is the surface AEO targets: the system that reads sources, decides what to quote, and hands the user a finished response.
Classic search returns ten links and lets the user do the synthesis. An answer engine does the synthesis itself — reading across sources, composing a reply, and citing some of them. ChatGPT, Claude, Gemini and Perplexity are all answer engines; so are AI Overviews inside Google Search. The shared trait is that the answer, not the link list, is the product.
For a brand this changes the goal. You are no longer competing only for a ranking slot; you are competing to be one of the sources the engine selects and quotes. That selection is what Share of Voice measures, and it is what Answer Engine Optimization is designed to influence.
Answer engines differ in how they ground their answers — some lean on parametric memory, others run a live web search — which is why SkuLift measures each engine separately and, where supported, splits parametric from web-grounded Share of Voice.