Lookalike segments expanded to Video brand campaigns with narrow, balanced and broad reach tiers

A new Google Ads Help page documents Lookalike segments in Video campaigns, previously available only in Demand Gen. Advertisers pick narrow (2.5% of users in the target location), balanced (5%, the default) or broad (10%), and the combined seed lists must hold more than 100 active matched people.

The narrow/balanced/broad reach tiers are the same controls Google removed from Demand Gen in March 2026. Segments refresh every one to two days and can only be created during campaign setup, not in Audience Manager. The change was published in help documentation with no blog post or in-account notice.