What are Google Demand Gen campaigns

When Google replaced Discovery ads with Google Demand Gen campaigns, it established a fundamental shift across its visual advertising ecosystem. Rather than a cosmetic rebrand, Demand Gen introduced an automated, AI-driven media format designed to capture prospective buyers before they begin active search queries.

While traditional search advertising captures existing commercial intent, demand generation marketing creates intent where none previously existed. By leveraging Google’s machine learning to experiment with multi-format image and video assets across its most immersive surfaces, Google Demand Gen delivers targeted visual storytelling to build awareness and generate high-intent pipeline.

Where do Demand Gen ads appear? Intent levels and expectations

Demand Gen campaigns reach billions of monthly active users. Following Google's 2026 platform roadmap, Google expanded this reach beyond the original core surfaces (YouTube, Discover, and Gmail) to incorporate Google Maps and the Google Display Network (GDN), formally positioning Demand Gen as the unified destination for all visual and display advertising.

Each placement carries a distinct user mindset, requiring tailored creative assets and realistic commercial expectations:

• YouTube (Shorts, In-feed, and In-stream): Users visit YouTube for education, analysis, or entertainment. They are receptive to engaging storytelling but will skip intrusive, direct-response pitches. YouTube placements excel at top-of-funnel brand recall; evaluate success using view-through rates and subsequent organic brand search lift.

• Google Discover: Discover serves an algorithmic feed based on individual browsing habits and industry interests. Click-through rates can be exceptionally high, but on-page bounce rates will rise if the destination page fails to immediately deliver on the ad's visual hook.

• Gmail (Social and Promotions tabs): Users checking email operate in a task-oriented headspace, scanning commercial offers and newsletters. Expanded teaser ads function as mini-landing pages, often generating stronger qualified engagement than passive social feed scrolls.

• Google Display Network (GDN) and Maps: As Google migrates Display inventory into Demand Gen, advertisers gain access to over two million partner websites, apps, and local discovery touchpoints. Channel controls allow you to tailor delivery across these network placements depending on whether your priority is broad reach or high-immersion video.

Demand Gen vs Performance Max vs Search campaigns

Understanding where Demand Gen sits within your wider paid media strategy prevents budget cannibalisation:

• Google Search: Captures active, bottom-funnel demand. The user has an identified problem and is actively querying solutions.

• Performance Max (PMax): A goal-driven, algorithmic campaign serving across all Google inventory (Search, Shopping, Display, YouTube, Maps, Discover, Gmail) to maximise bottom-line conversion volume. For a structured approach, you can utilise our Google Ads Performance Max campaign template spreadsheet.

• Demand Gen: Focuses on visual discovery, category education, and mid-funnel consideration. Unlike PMax, it provides granular control over creative asset combinations, dedicated channel controls, and exclusive access to first-party Lookalike Segments (Narrow 2.5%, Balanced 5%, and Broad 10%).

If you are unsure which campaign type suits your immediate commercial goals, review our guide on how to choose the right marketing channel.

When NOT to use Demand Gen campaigns

Despite its reach, Demand Gen is not suited to every commercial scenario. Avoid this format if:

• You need immediate, bottom-funnel sales: If your mandate is capturing active in-market leads this week, prioritise Search. Demand Gen requires time to build mental availability.

• Your budget cannot support algorithmic learning: Automated bidding relies on conversion liquidity. If your media spend cannot support consistent conversion volume, the bidding model will stall in an extended learning phase.

• You lack multi-format visual assets: Demand Gen depends on visual impact. If you only have text assets or generic stock imagery, standard Search campaigns will deliver a far higher return.

Creative specifications and asset requirements

Because Demand Gen uses machine learning to assemble responsive ad combinations across multiple surfaces, providing a diverse set of creative ingredients is essential.

Each Demand Gen ad supports up to 5 headlines (maximum 40 characters), up to 5 descriptions (maximum 90 characters), up to 20 images, and up to 5 videos:

• Image assets: Supply high-resolution assets across Landscape (1.91:1), Square (1:1), Portrait (4:5), and Vertical (9:16). Avoid cluttered, text-heavy graphics to ensure assets feel native to mobile feeds.

• Video assets: Provide video creative across Horizontal (16:9), Square (1:1), Portrait (4:5), and Vertical (9:16 Shorts). The opening three seconds must clearly establish your value proposition and brand identity before user attention wanders.

Navigating Demand Gen bidding strategies

Selecting the right bid strategy dictates how Google allocates your spend. Calibrate your bidding approach to account maturity and data volume:

• Maximise Clicks: Ideal during the launch phase of a new campaign to drive traffic volume to long-form editorial content while the platform gathers initial audience signals.

• Maximise Conversions with target CPA (tCPA): Deployed once an account has accumulated steady conversion volume (ideally around 50 conversions over 30 days). Setting a realistic tCPA guardrail prevents the platform from overpaying during competitive auction spikes.

• Maximise Conversion Value with target ROAS (tROAS): Recommended for mature accounts that pass offline conversion values, deal sizes, or closed-won CRM data back into Google Ads. This ensures smart bidding prioritises high-value enterprise accounts over low-intent clicks.

Budgeting guidelines: The 10x target CPA rule

Google recommends setting your daily campaign budget to at least 10 times your target CPA. For example, if your target CPA for a qualified enquiry is £40, your recommended daily campaign budget is £400.

While the absolute technical minimum budget in the Google Ads interface is nominal (around £5 daily), this 10x guideline exists because automated bidding algorithms rely on conversion liquidity:

• Algorithmic calibration: To determine which creative assets, audience segments, and placements perform best, Google’s machine learning requires roughly 10 to 15 conversions per day per campaign cluster.

• Auction volatility: A 10x budget buffer gives the platform room to bid competitively across different hours of the day without exhausting its daily allocation during early morning auctions.

What happens if a campaign is underfunded?

Running a campaign with a daily budget only two or three times your target CPA causes algorithmic throttling. The campaign enters a prolonged "Learning" state, delivery becomes erratic, and the algorithm often retreats to cheaper, lower-intent placements where clicks are plentiful but commercial intent is weak.

How to measure B2B ROI from Demand Gen

Visual feed campaigns generate value across the entire buyer journey rather than solely on the final click. Relying strictly on last-click attribution will undervalue your investment. Use a multi-layered measurement model:

• Assisted Conversions: Use GA4 multi-touch attribution paths to identify how early Demand Gen interactions introduce prospective buyers who later convert via organic search, direct navigation, or brand PPC.

• Engaged-View Conversions (EVC): Tracks users who watch at least 10 seconds of a skippable video ad (or the entire duration if under 10 seconds) and subsequently convert on your site. While the default attribution window is 3 days, this can be configured between 1 and 30 days in your conversion settings.

• Brand Lift and Search Lift: Run lift studies to measure statistically significant increases in organic brand searches and product awareness resulting directly from your visual campaigns.

• Closed-Loop Attribution: Capture unique click identifiers (such as the GCLID) using our UTM tracking template spreadsheet or by following our guide on what Google Ads auto-tagging is and how to use it. Passing click IDs through your CRM allows you to attribute pipeline revenue directly back to Demand Gen campaigns.

Solving the B2B conversion liquidity trap

A common pitfall in B2B Demand Gen execution is instructing the algorithm to optimise directly for a low-volume, high-friction bottom-of-funnel conversion (such as an enterprise demo request that only generates 3 or 4 submissions a month).

Because smart bidding algorithms require statistical liquidity to optimise, a tiny conversion volume freezes the campaign in the learning phase.

The solution:

• Bid on high-intent micro-conversions: Set your primary campaign conversion goal to a meaningful upstream milestone that yields sufficient volume, such as visits to high-intent pricing pages, product architecture views, or qualified content downloads.

• Launch with Maximise Clicks: Use Maximise Clicks initially to drive traffic and build a verified retargeting pool, switching to target CPA only after conversion signals have accumulated.

• Record demo requests as secondary conversions: Keep your primary demo forms tracked so you can monitor pipeline attribution without starving the bidding algorithm of daily feedback.

If you are looking to integrate visual campaigns into your wider marketing mix, explore our specialist pay-per-click and paid social advertising services, or discover how to link ad clicks to pipeline revenue in our guide on building a PPC strategy that delivers a measurable return on investment.

To evaluate your paid media performance with our senior team, get in touch with Brew Digital today.