Google is retiring standalone Display campaigns and folding them into Demand Gen, its AI-optimised format that also covers YouTube, Discover, Gmail and Maps. Migration is voluntary for now, using a tool that preserves up to 42 days of performance history, but it becomes mandatory later as Google phases out the ability to create new Display campaigns and eventually auto-migrates whatever’s left. This article covers what’s actually changing, what you lose in the move, and a practical checklist for migrating without a painful performance dip.
What’s changing, and what isn’t
The Google Display Network itself isn’t disappearing — the same inventory across roughly two million sites and apps is still there. What’s changing is the campaign wrapper around it. Instead of a standalone Display campaign, that inventory now lives inside Demand Gen, alongside YouTube (including Shorts), Discover, Gmail and Maps.
The rollout has moved in stages: a voluntary migration tool became available to eligible advertisers from June 2026, after which new Display campaigns can only be created within Demand Gen, and any campaigns left un-migrated will eventually be moved automatically by Google’s systems. Advertisers who want to run GDN-only campaigns can still do so within Demand Gen — the network hasn’t been forced open to every surface, but the campaign type managing it has changed.
Why Google is making the move
Google’s stated rationale is that customer journeys no longer move in a straight line — people bounce between YouTube Shorts, Discover feeds, Gmail and traditional web browsing within minutes, and Demand Gen was built to connect those touchpoints inside one AI-optimised campaign rather than managing them separately. Google reports an average 9.5% increase in ROI for advertisers who add GDN into Demand Gen compared with running Display standalone, though as with any platform-reported average, actual results vary by account, creative quality and audience data.
What you gain
- Broader reach in one campaign: GDN sits alongside YouTube, Discover, Gmail and Maps, giving Demand Gen access to a reported 3 billion monthly active users across Google’s most visual surfaces.
- Richer creative formats: Demand Gen supports video and carousel formats in addition to the static image formats Display campaigns relied on.
- AI-powered audience tools: Lookalike and similar-segment generation inside Demand Gen often outperforms legacy Display remarketing by expanding reach to users with comparable behaviour, rather than relying solely on historic visitor lists.
- Preserved performance history: Using Google’s migration tool (rather than building a fresh Demand Gen campaign from scratch) carries across up to 42 days of performance data, cutting the typical learning period down to roughly one to two days instead of a cold start.
What you lose or need to change
- Manual CPC and pay-for-conversions bidding don’t transfer directly — Demand Gen relies on automated bid strategies.
- Bid adjustments and portfolio bidding are not available in the same way inside Demand Gen.
- Campaign-level content suitability exclusions must move to account level before migration will complete — this is a genuine task with a hard requirement attached, not just a recommendation.
- Video billing changes: video assets served on Display within Demand Gen move from cost-per-click to cost-per-thousand-impressions billing, which changes how you should think about video creative cost-efficiency.
- The migration cannot be undone once applied, so review a campaign fully before running it through the migration tool.
Step-by-step migration checklist
- Audit current Display campaigns first. Before migrating anything, remove campaigns or ad groups that no longer have a clear job. Migrating clutter just creates automated clutter.
- Check for campaign-level content suitability exclusions and move them to account level — migration won’t complete without this.
- Use the migration tool, not a rebuild. Building a new Demand Gen campaign from scratch forfeits the 42-day performance history transfer and forces a full cold start.
- Start GDN-only after migrating, if that’s how the original campaign ran, rather than opening every channel immediately. This gives you a cleaner before-and-after comparison.
- Prepare creative assets ahead of time, not after migration: square, landscape and portrait images; short horizontal and vertical video; multiple headlines and descriptions; and landing pages that match each message. Demand Gen performs best with a genuinely varied asset library, not one landscape image repurposed everywhere.
- Expand into YouTube, Discover, Gmail or Maps intentionally, once the migrated campaign has stabilised, rather than all at once.
- Measure incrementality, not just platform CPA. Compare blended customer acquisition cost, branded search lift and retargeting pool quality against your pre-migration baseline, rather than judging success purely on Demand Gen’s own reported conversions.
What this means for budget owners
Display was often the “set it and forget it” line in a media plan — broad reach at a low cost, rarely scrutinised closely. Demand Gen asks more of it: better creative, more active channel management, and a fresh learning period every time a campaign moves. Business leaders should expect a short-term dip in reported efficiency immediately after migration, followed by recovery, and should budget the time and creative resource needed to build out the asset variety Demand Gen expects — this is not a one-click swap.
Not immediately. Migration is currently voluntary, using a tool that preserves performance history. However, new Display campaigns can now only be created inside Demand Gen, and un-migrated campaigns will eventually be moved automatically, so proactive migration on your own timeline is the better option.
Only if you use Google’s official migration tool, which carries across up to 42 days of history and shortens the learning period to roughly one to two days. Building a brand-new Demand Gen campaign instead starts from zero, with a typical learning period of one to two weeks.
Yes. You can restrict a Demand Gen campaign to GDN inventory only, without opening it up to YouTube, Discover, Gmail or Maps. The channel mix is your choice; what’s changed is the campaign type used to manage it.
Demand Gen only supports content suitability exclusions at account level, not campaign level. If your current exclusions are set at campaign level, you’ll need to move them to account level before the migration will complete.
Not inherently — Google reports an average 9.5% ROI increase for advertisers combining GDN with Demand Gen’s other channels. However, video billing on Display within Demand Gen shifts from cost-per-click to cost-per-thousand-impressions, which changes cost dynamics for video-heavy campaigns specifically, so it’s worth modelling that shift before assuming like-for-like costs.
