Demand Gen is a Google Ads campaign type designed to drive demand across visually rich Google surfaces such as YouTube, Discover, and Gmail.
It matters because paid search can spend budget quickly. Knowing this term helps teams control intent, targeting, bidding, creative, conversion tracking, and lead quality instead of optimizing for surface-level clicks.
Example
A cookware brand has vertical recipe videos and still product photographs. It can organize a Demand Gen test around suitable visual channels, such as YouTube Shorts or Discover, and compare channel results instead of assuming the same creative works everywhere.