Google Demand Gen Campaigns: Setup and Optimization Guide

Google Demand Gen campaigns help you reach users across YouTube, Discover, Gmail, and the Display network with one AI-optimized campaign. This guide explains how to set up Demand Gen, build asset groups, use audience signals, and measure results so startups can capture demand where their buyers already scroll.

What Is a Google Demand Gen Campaign?

Demand Gen is a Google Ads campaign type launched in 2023 that consolidates reach across YouTube (in-stream, in-feed, and Shorts), the Discover feed, Gmail promotional tabs, and the Display network. Instead of bidding on keywords, it uses Google AI to match your visual and video assets with the audiences most likely to convert. Google is actively phasing out standard Display campaigns in favor of Demand Gen, which makes it the default prospecting surface for visual discovery. It is especially effective for SaaS and consumer startups that already have strong video or image assets to fuel the algorithm.

For startups, Demand Gen is useful when you want to build mid-funnel awareness and drive conversions from people who are not yet searching for your product by name. It sits between pure awareness campaigns and high-intent Search, catching users during the research phase when they are comparing options. Because the format is visual first, it rewards strong creative and a clear value proposition more than a long keyword list does.

How Do You Set Up a Demand Gen Campaign in Google Ads?

Follow these steps to launch your first campaign:

1. Open Google Ads and click New Campaign, then choose Leads or Sales as your objective.
2. Select Demand Gen as the campaign type (you may need to scroll past Display and Video).
3. Set your conversion goal and link the relevant conversion action from your site or app.
4. Choose bidding: Maximize Clicks for traffic, Target CPA for cost control, or Maximize Conversions or Conversion Value.
5. Define your geographic and language targeting, then set a daily or campaign-level budget.
6. Build at least one asset group with videos, images, headlines, and a final URL.
7. Add audience signals, then publish and let Google's AI begin optimizing delivery.

Start with a budget you can sustain for at least two to three weeks. Demand Gen needs roughly 50 conversions per asset group before its bidding model stabilizes, so avoid micro-budgets that starve the learning phase. If you are also running video, our YouTube advertising guide covers creative specs in depth.

What Are Asset Groups and How Should You Build Them?

An asset group is the creative unit Demand Gen optimizes against. Each group pairs a set of assets (videos, images, headlines, descriptions, and a landing page) with audience signals. Google rotates and combines these assets to find the highest-performing mix for each placement. The model reports which individual assets win, so you can see whether your short-form video or your square image drives the most qualified clicks.

Build asset groups around a single theme or audience rather than dumping everything into one group. For example, separate your top-of-funnel explainer video from your product-demo assets so the algorithm can learn which theme drives qualified clicks. Provide the full range of formats Google requests: vertical and landscape video, landscape and square images, and at least five headlines. The more assets you supply, the more combinations Google can test and the faster it exits the learning phase.

Refresh creative every four to six weeks. Even strong assets lose impact as frequency climbs, and a stalled asset group will quietly drag down your cost per result.

How Do Audience Signals Work in Demand Gen?

Audience signals are hints, not hard targeting. You supply first-party data such as customer lists, website visitors, or custom segments, plus interest and lookalike suggestions. Google then expands beyond those seeds to find similar users across its inventory. Treat signals as the starting point: the campaign will reach people outside your declared audiences if the AI predicts they will convert.

Best practice is to upload a high-quality customer match list or integrate your CRM so Google can build lookalikes from your best buyers. Pair that with in-market and affinity segments relevant to your category. Avoid over-narrowing with too many restrictive signals, which limits the algorithm's ability to find incremental reach. Think of signals as a compass for the model, not a fence around your audience.

How Is Demand Gen Different from Discovery and Performance Max?

Demand Gen replaced Discovery campaigns and overlaps with Performance Max, but the three are not interchangeable.

If you need Search queries and retail feeds, Performance Max is the broader net. If your goal is visual discovery on YouTube and the Discover feed, Demand Gen is the focused, lower-complexity choice. Most startups run both, using Demand Gen for prospecting and Search or Performance Max for captured intent. Our Performance Max guide explains when to graduate to that campaign type.

How Should You Measure and Optimize Demand Gen Performance?

Because Demand Gen serves across multiple surfaces, last-click attribution undervalues it. Track view-through conversions alongside click conversions, and watch assisted conversions in your analytics tool. A user may see your Short, then convert days later through a branded search, with none of that journey captured by a last-click model.

Optimize by asset-group performance: pause headlines or videos with low engagement and refresh creative every four to six weeks to fight fatigue. Use the Asset report to see which combinations win, and shift budget toward the asset groups with the lowest cost per qualified action. Pair Demand Gen with a disciplined Display strategy if you still need placement-level control, and revisit your conversion tracking setup before scaling spend.

What Creative Performs Best in Demand Gen?

The campaign rewards native, platform-appropriate creative over repurposed ad banners. Vertical video under 15 seconds tends to outperform longer edits on Shorts, while square and landscape images carry the Discover and Gmail cards. Lead with the value proposition in the first three seconds of any video, because YouTube placements are skippable and Discovery users scroll fast.

Use a tight message hierarchy: one hero claim, one proof point, and a single clear call to action per asset. Avoid cramming logos, pricing, and three offers into one image. Test emotional hooks against practical ones, since Demand Gen audiences are often in the consideration stage rather than ready to buy. Keep text legible on mobile, where most impressions land, and mirror your landing page promise so the click-through experience feels continuous rather than disjointed.

Finally, keep a consistent brand voice across formats so the campaign reinforces recognition as users move between YouTube, Gmail, and Discover. A viewer who sees your Short, then your Discover card, should instantly connect both to the same company. Creative cohesion is what turns scattered impressions into a remembered brand when that buyer finally reaches the decision stage.

Key Takeaways

1. Demand Gen unifies YouTube, Discover, Gmail, and Display into one AI-optimized prospecting campaign.
2. Build themed asset groups with the full range of video and image formats Google requests.
3. Use first-party audience signals, then let Google expand to lookalikes and in-market users.
4. Measure with view-through and assisted conversions, not last-click alone.
5. Refresh creative every four to six weeks and shift budget to your best-performing asset groups.

Frequently Asked Questions

Is Demand Gen Replacing Discovery Campaigns?

Yes. Google is sunsetting standard Discovery campaigns and steering advertisers to Demand Gen, which adds YouTube Shorts and in-stream video plus stronger AI bidding. If you still run Discovery, plan a migration to Demand Gen to keep access to new features.

Do I Need Video Assets to Run Demand Gen?

Video is strongly recommended because it unlocks YouTube placements, but you can launch with images alone. To maximize reach across all surfaces, supply both vertical and landscape video plus square and landscape images.

What Budget Should a Startup Start With?

Budget enough to generate roughly 50 conversions per asset group during the learning phase, typically a few hundred dollars per month at minimum. Too small a budget starves the algorithm and slows optimization.

How Long Before Demand Gen Optimizes?

Expect two to three weeks of learning as Google gathers conversion data. Avoid frequent edits during this window, since large changes reset the learning phase and delay stable performance.

Should I Run Demand Gen or Performance Max?

Use Demand Gen for visual mid-funnel discovery and Performance Max when you want Search intent and retail feeds included. Many startups run both, with Demand Gen for prospecting and Performance Max or Search for captured demand.

Related Reading

• Performance Max campaigns guide
• Google Display Ads guide
• YouTube advertising guide
• B2B demand generation guide