Why Demand Gen works best alongside Performance Max for ecommerce

The Evolving Landscape of Google Ads for Ecommerce

The digital advertising ecosystem is constantly shifting, driven largely by Google’s push toward automation and AI-powered campaign types. For modern ecommerce advertisers, navigating this shift requires not just adopting new tools, but understanding how they fit together to serve a cohesive full-funnel strategy.

When Google first introduced Demand Gen campaigns in 2023, they were positioned as a versatile tool designed to drive deeper engagement across its visually rich platforms: YouTube, Discover, and Gmail. Initially, these campaigns felt experimental, residing in the often-tricky middle ground between pure brand awareness and direct performance marketing.

Since that initial launch, Demand Gen has matured significantly. Its enhanced capabilities, particularly around creative flexibility and precise audience control, have cemented its role as a fundamental campaign type for scaling ecommerce revenue in a measured and sustainable way. Demand Gen allows brands to maintain creative consistency and execute sophisticated message testing while simultaneously focusing on conversion goals.

The critical insight for maximizing return on investment (ROI) is this: Demand Gen is not a replacement for high-intent campaigns. It performs best when integrated strategically alongside conversion powerhouses like Performance Max (PMax) and traditional Search campaigns. By leveraging the specific strengths of both Demand Gen and Performance Max, advertisers can ensure they are both *creating* new demand and efficiently *capturing* existing intent across the entire customer journey.

Decoding Demand Gen: The Creative and Audience Powerhouse

The philosophical difference between Demand Gen and Performance Max comes down to control versus scale. In an era dominated by automated tools, Demand Gen campaigns appeal directly to advertisers who prioritize manual input, transparency, and creative precision.

Choosing Control Over Automation

One of the persistent critiques leveled against Performance Max is its inherent lack of transparency and limited manual control. PMax is engineered to use Google’s proprietary machine learning to find the optimal placements and audience segments across nearly all Google properties (Search, Display, Discover, Gmail, Maps, and YouTube), often functioning as a powerful, yet opaque, “black box.”

In Performance Max, ads are automatically assembled by Google’s AI, which tests and recombines headlines, descriptions, images, and videos uploaded by the advertiser. While this minimizes setup time and maximizes reach, it requires that all uploaded assets be robust and aligned with brand standards, as the advertiser relinquishes significant control over the final presentation and placement.

Consider a large online furniture retailer. They might segment their PMax efforts using separate asset groups for sofas, dining tables, and lighting, directing general content toward relevant product categories. However, the true control over *how* that content appears to specific users remains limited by the automation layer.

Demand Gen, in sharp contrast, provides much greater operational flexibility. Advertisers can upload, preview, and manually adjust ad combinations *before* the campaign launches. This level of granular control means creative assets can be specifically tailored for their intended environment. For example, a retailer can upload distinct video ads designed explicitly for YouTube in-stream, in-feed, and the vertically optimized format required for YouTube Shorts. This creative precision and manual oversight are essential for ecommerce brands that need to maintain strict visual identity, test subtle messaging variations, or comply with specific regulatory or branding requirements.

The Shift from Awareness to Performance

While Demand Gen is excellent for creative testing and audience building, its function has evolved past simple brand awareness. Thanks to optimization improvements and advanced bidding strategies, Demand Gen is now an effective mid-funnel tool capable of driving high-quality conversions.

The campaign type excels at introducing potential customers to a brand or product line through engaging, visual storytelling across highly personalized feeds like YouTube and Discover. These interactions build trust and familiarity, priming users to convert when they later encounter a high-intent campaign like Search or PMax. This process shifts Demand Gen from a pure awareness tool into a critical engine for creating *qualified* demand.

The Strategic Pairing: Demand Creation vs. Demand Capture

The true effectiveness of integrating Demand Gen with Performance Max is realized when they are understood as complementary parts of a unified full-funnel marketing machine. They are designed to operate at different, yet connected, stages of the customer journey, avoiding unnecessary competition while maximizing reach.

Demand Gen operates predominantly in the upper and mid-funnel. Its purpose is to build awareness, generate interest, and nurture potential customers often before they have begun actively searching for a specific product solution. It targets users based on behaviors, interests, and lookalike modeling, effectively surfacing latent demand.

Performance Max, conversely, is built to convert lower-funnel users who exhibit high purchase intent. PMax hunts for users who are ready to buy, using signals derived from active searches, recent browsing behavior, and product research.

Practical Application in Ecommerce

Imagine a niche electronics brand launching a new smart wearable device.

1. **Demand Creation (Demand Gen):** The brand utilizes Demand Gen to run engaging, cinematic video advertisements showcasing the wearable’s lifestyle benefits across YouTube, Shorts, and Discover feeds. They target custom segments—such as fitness enthusiasts, early tech adopters, and competitors’ customer lists—building awareness and generating initial clicks to landing pages.
2. **Demand Capture (Performance Max):** Once those users have interacted with the brand (e.g., visiting the product page or watching 75% of a video), they become strong retargeting candidates. PMax then steps in, serving tailored Shopping placements and relevant Search ads across the network, pushing the user toward the final conversion.

This funnel approach ensures that marketing spend is focused appropriately: high-cost, high-production creative content is used to create desire, and highly automated, efficient conversion campaigns capture that desire at the point of decision.

Minimizing Overlap with Feed-Only PMax

For sophisticated advertisers, avoiding unnecessary competition between the two campaign types is key to budget efficiency. One highly effective technique is utilizing feed-only PMax campaigns.

In this structure, the PMax asset groups are configured to contain only the Google Merchant Center product feed, without supplying any other text, images, or videos. This tactic restricts the PMax campaign primarily to Shopping placements, focusing it almost entirely on direct conversion opportunities where the product listing ad (PLA) is the most powerful asset.

Simultaneously, the Demand Gen campaign runs across YouTube, Gmail, Discover, and Shorts, handling the visual, awareness-based advertising in the upper and mid-funnel. This segmentation ensures:

1. PMax remains a high-efficiency machine focused on immediate sales capture.
2. Demand Gen focuses on long-term brand building and audience acquisition using unique visual placements.

This dual structure provides comprehensive coverage across the entire funnel, leading to clearer attribution and less internal bidding competition, a crucial benefit for large accounts with complex ad structures.

Architectural Shifts in Google Ads: The Evolution of Visual Campaigns

Google’s introduction of Demand Gen was not merely a new feature; it represented a strategic consolidation of its visual advertising products, significantly impacting how advertisers manage video and discovery placements.

The Retirement of Video Action Campaigns (VACs)

A major turning point occurred in July 2025, when Google officially replaced Video Action Campaigns (VACs) with Demand Gen. VACs had long been a reliable workhorse for ecommerce, particularly favored for their ability to drive measurable conversions directly from YouTube videos.

The removal of VACs was a clear signal to advertisers that Google is centering its video strategy around Demand Gen. While this initially caused concern among performance marketers, the upside of the migration is the improved creative control and expanded testing options now available within Demand Gen across all YouTube formats.

Advertisers who were previously running VACs found their campaigns migrated into the new Demand Gen structure. The necessary action was to audit these new campaigns, ensuring top-performing assets and critical audience lists transferred correctly, and then leveraging Demand Gen’s superior controls to refine performance and optimize for conversion pathways across the extended placements.

Critical Areas Where Demand Gen Offers Superior Control for Ecommerce

The ability to finely tune campaign settings is where Demand Gen truly shines, providing capabilities that are either limited or non-existent in the automated PMax environment. These controls are invaluable for driving high-quality customer acquisition in ecommerce.

Precision Audience Targeting and Lookalike Audiences

For ecommerce marketers focused on the quality of acquisition, audience management in Demand Gen is a game-changer. Unlike PMax, which relies on “audience signals” to *inform* the AI, Demand Gen allows the advertiser to manually build, manage, and fix targeting for specific audiences. This includes the ability to select specific placements, combine detailed audience types, and ensure budgets are deployed precisely where the highest-value users are located.

Crucially, Demand Gen is currently the only major Google Ads campaign type that supports **lookalike audiences**. This feature allows brands to upload a seed audience (e.g., their highest lifetime value customers or recent converters) and instruct Google’s AI to find new potential customers who share similar demographic and behavioral characteristics. For brands prioritizing scalable, high-quality customer acquisition, the precise control over lookalike targeting is arguably the single biggest advantage Demand Gen holds over PMax.

Manual Channel Control

In a welcomed move toward greater transparency, Google introduced an open beta in June 2025 that allows advertisers to manually opt out of specific Demand Gen channels.

This means advertisers can now choose exactly where their visual ads appear. If, for instance, data shows that conversion quality from Discover placements is low, or if the vertical aspect ratio required for YouTube Shorts conflicts with the brand’s creative assets, those channels can be excluded.

This seemingly small update reverses the trend of mandatory placements seen in highly automated campaigns. It gives advertisers the critical flexibility to allocate budget exclusively to the channels that deliver the desired ROI and brand experience, a level of control often requested by professional marketers.

Product Feed Integration: Bridging Branding and Commerce

A significant enhancement arrived in early 2025 with the introduction of product feed integration for Demand Gen campaigns. This capability allows advertisers to link their Google Merchant Center feeds directly into their visual advertisements.

For ecommerce, this feature provides the ideal hybrid experience:

1. **Storytelling:** The campaign can use highly engaging, lifestyle-focused video and image creative to tell the brand’s story and build aspiration (branding).
2. **Conversion:** Simultaneously, live product data can be displayed underneath the visual creative via shoppable product cards, driving immediate, attributable conversions (performance).

For example, a boutique clothing retailer could run a compelling video showcasing a new spring collection (high-level branding), while the corresponding product feed automatically pulls in pricing and availability for specific items worn by the models (direct commerce). This integration elevates Demand Gen from a general display tool into a true performance-focused hybrid, effectively bridging the traditional gap between brand building and measurable sales.

Practical Considerations for Implementation and Budgeting

While the synergy between Demand Gen and Performance Max is powerful, successfully launching Demand Gen requires careful planning, particularly regarding budget and data infrastructure.

Budgeting for Strategic Growth

Demand Gen campaigns typically require a higher investment threshold than basic Search or standard Display campaigns to gather meaningful data and exit the initial learning phase effectively. Google recommends a starting budget that is either:

1. Approximately £100 per day per campaign.
2. Or, 20 times your target CPA (Cost Per Acquisition) or target tROAS (Target Return on Ad Spend), whichever value is higher.

In practice, this £100-per-day baseline is crucial. Attempting to run Demand Gen on meager budgets often starves the machine learning algorithms, limiting data flow and slowing the optimization cycle, which ultimately yields inconsistent results. Since Demand Gen aims to reach new, high-quality users at the upper and middle sections of the funnel, patience and sufficient budget allocation are necessary for the campaign to find its footing and optimize toward conversion goals.

Prerequisites for Demand Gen Success

Demand Gen should be viewed as an advanced layer in your overall Google Ads strategy, not a foundational element. Before launching, ecommerce businesses should ensure they have:

* **Reliable Measurement:** A clean, correctly implemented conversion tracking setup (including enhanced conversions) is non-negotiable.
* **Defined Audiences:** High-quality customer lists, defined custom segments, and robust lookalike audiences ready for immediate activation.
* **Clean Product Feed:** An optimized Google Merchant Center feed is essential, especially when leveraging the product feed integration for shoppable ads.
* **High-Quality Creative Assets:** Since Demand Gen relies heavily on visual appeal across diverse formats (vertical shorts, horizontal videos, discovery images), investing in strong, variant-tested creative is paramount.

Side-by-Side Comparison: Demand Gen versus Performance Max

Understanding the core differentiators is essential for allocating budget and managing expectations across the full funnel. While both aim to drive conversions, their mechanisms and transparency levels differ profoundly.

Using Demand Gen to Create Demand and PMax to Capture It

The era of relying on a single campaign type to drive scalable ecommerce growth is fading. While Performance Max remains the dominant force for automation, scale, and capturing existing market intent, it is often criticized for operating like a “black box” that prioritizes volume over creative nuance.

Demand Gen provides the necessary antidote. It offers marketers the control, creative precision, and audience visibility that high-growth brands need to acquire new customers strategically and ethically. The combination of lookalike audiences, channel control, and shoppable feed integration elevates Demand Gen far beyond a simple display campaign.

For forward-thinking ecommerce businesses seeking measurable, brand-led growth, running Demand Gen alongside PMax provides a complete, modern framework:

* **Demand Gen** utilizes superior creative and targeted audiences to build and nurture high-quality leads at the upper and mid-funnel. It creates the necessary consumer desire and brand loyalty.
* **Performance Max** steps in at the crucial moment, utilizing its pervasive reach and conversion optimization to capture that created demand efficiently, translating interest into revenue.

Used together, Demand Gen and Performance Max form the dual engine necessary for scalable, sustainable, and transparent growth in the competitive world of online retail.