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How to Prove Your Brand Campaigns Work: ROAS Optimization Beyond Last-Click

Jan 20, 2026

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Meghan Crook Brisson
Brand Campaigns ROAS Optimization Beyond Last-Click
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Your CFO looks at your programmatic campaigns and sees high spend, low form fills, and what appears to be waste.

You know your display campaigns build awareness. Your CTV ads reach decision-makers. Your audio spots connect with prospects during commutes. But when it’s time to prove ROI, last-click attribution gives them zero credit.

Here’s the reality: by the time a prospect fills out a form, 70% of their buying decision is already made. If your brand campaigns influenced that decision but can’t prove it, you’re fighting an uphill battle for budget.

We will show you how to optimize ROAS measurement for B2B brand campaigns — proving impact at every stage of the buyer journey, not just the last click.

Why Traditional ROAS Measurement Fails B2B Brand Campaigns

Measuring the true impact of advertising campaigns is essential but challenging in B2B. While traditional programmatic metrics like impressions, reach, and click-through rates provide useful visibility into performance, they only tell part of the story.

Return on Ad Spend (ROAS) measures how efficiently your advertising investments generate results. But in B2B, “results” don’t mean immediate conversions. The buying cycle is longer, the decision-making process involves multiple stakeholders, and much of the influence happens before a prospect ever fills out a form.

Traditional ROAS measurement focuses on direct response metrics — clicks, form fills, demo requests. These work well for bottom-funnel tactics designed to capture existing demand. But they fail to measure what brand campaigns actually do: build awareness, influence consideration, and shape buying decisions long before someone converts.

The challenge is proving this influence exists. ROAS optimization in B2B requires a holistic approach that blends program-level metrics with pipeline attribution insights to understand your campaigns’ true effectiveness.

The ROAS Measurement Gap: What You’re Missing

Most B2B marketers measure ROAS using last-click attribution. This model gives all credit to the final touchpoint before conversion — usually a retargeting ad, branded search click, or direct website visit.

Here’s what last-click attribution misses:

Early-stage influence. Your display campaigns reached an account six times before they ever visited your website. Last-click gives those impressions zero credit, even though they created the awareness that led to the eventual search.

Buying group dynamics. Multiple personas influenced the purchase decision. Your CTV ads reached the CFO. Your display ads reached the IT Director. Your audio ads reached the VP of Marketing. Last-click only credits whoever clicked last, ignoring the committee you actually influenced.

Long buying cycles. B2B purchases take 3-6 months on average. Your campaigns influenced accounts throughout that journey, but last-click only sees the moment they converted, not the months of research that preceded it.

This measurement gap makes your best campaigns look like your worst. It pushes budget toward bottom-funnel tactics that harvest existing demand and away from brand campaigns that create demand in the first place.

How to Measure ROAS Across the Full Buyer Journey

Effective ROAS optimization requires multiple measurement approaches working together. Here’s how to build a complete view.

Layer 1: Program Metrics and Benchmarks

Start with core program metrics that provide visibility into how your campaigns resonate with target audiences.

Reach and Impressions quantify visibility and scale, confirming that your ads are being delivered to the right audience segments within your target account list. These metrics don’t prove influence, but they establish whether you’re reaching the accounts that matter.

Click-Through Rate (CTR) and Engagement reveal how compelling your creative and messaging are. Strong performance here signals that your campaign resonates with the right people and generates meaningful interaction, not just passive exposure.

Brand Lift measures how exposure to your ads influences brand awareness, consideration, favorability, and purchase intent. For awareness and upper-funnel campaigns, these are often the first indicators of future pipeline growth. Brand lift studies connect ad exposure to shifts in perception, even when prospects don’t immediately convert.

Individually, these metrics offer tactical insights. Combined, they paint a more complete picture of audience resonance and message effectiveness. But they still don’t connect directly to revenue.

Layer 2: Influenced Pipeline Attribution

This is where ROAS optimization gets real for B2B marketers. Measuring pipeline impact is no longer optional — marketing teams must show how advertising spend contributes to influenced pipeline, even when direct attribution is difficult.

Signal-based attribution solves this by connecting advertising exposure to downstream buying behaviors. Instead of waiting for a form fill, you monitor changes in intent signals, engagement patterns, and account activity post-campaign. This reveals which ads and channels most effectively move prospects through the funnel.

For example, an account shows increased research activity after exposure to your display campaign. They visit your website more frequently. They download content. They engage with branded search. Even if they don’t fill out a form immediately, you can flag this account as “influenced” and create a measurable link between ad spend and pipeline impact.

This approach gives B2B marketers the evidence needed to justify brand advertising spend. It connects awareness-driven campaigns to real business outcomes, not just last-click metrics that show only part of the story.

Layer 3: Multi-Touch Attribution Models

While last-click attribution oversimplifies the buyer journey, multi-touch models distribute credit across multiple touchpoints. This provides a more nuanced view of how different channels contribute to conversions.

First-touch attribution gives credit to the campaign that introduced the account to your brand. This helps you understand which channels drive new demand and identify top-of-funnel performers.

Time-decay attribution gives more weight to recent touchpoints while still crediting earlier ones. This balances the influence of awareness campaigns with the conversion power of bottom-funnel tactics.

U-shaped attribution emphasizes first touch and last touch while giving some credit to middle interactions. This model recognizes that both creating demand and capturing it matter.

No single attribution model tells the complete story. The key to ROAS optimization is using multiple models side-by-side to see which channels excel at different stages of the buyer journey.

ROAS Optimization in Action

Here’s how to implement better ROAS measurement across your programmatic campaigns.

Step 1: Define Your Conversion Events (Plural)

Stop measuring only SQLs or closed deals. Add upstream milestones like content downloads, demo requests, trial signups, and meeting bookings. Add downstream milestones like opportunity created, closed-won, and deal size.

This creates multiple conversion points across the buyer journey, allowing you to measure how different campaigns influence different stages.

Step 2: Establish Your Attribution Mix

Choose 2-3 attribution models to run simultaneously. At minimum, use first-touch and last-touch side-by-side to see which campaigns create demand versus which capture it. For more sophisticated analysis, add time-decay or U-shaped models.

If you have access to intent data, layer in influenced pipeline tracking to capture accounts that show increased research activity after ad exposure, even if they haven’t converted yet.

Step 3: Map Campaign Impact to Business Outcomes

For each campaign, track:

  • Immediate metrics: Impressions, reach, CTR, engagement
  • Short-term indicators: Website traffic spikes, branded search lift, content downloads
  • Long-term impact: Pipeline influence, deal velocity, account engagement scores

Connect these metrics to calculate true ROAS: Expected Revenue from Pipeline ÷ Campaign Spend

Do this calculation using each attribution model. Compare the results. Your “worst performing” channel in last-click might be your best performer in first-touch or influenced pipeline.

Step 4: Build Your ROAS Dashboard

Create a reporting view that shows campaign performance across all three measurement layers: program metrics, influenced pipeline, and multi-touch attribution. Update this monthly and review it with both marketing and sales leadership.

This dashboard becomes your evidence when defending brand campaign budgets. Instead of arguing that “awareness matters,” you show exactly which accounts were influenced, how their behavior changed, and how much pipeline they represent.

How Intent Data Powers Better ROAS Optimization

Traditional attribution struggles because it can only track known interactions — website visits, form fills, email clicks. But B2B buyers conduct most of their research anonymously, consuming content across industry sites, B2B platforms, and search engines before ever identifying themselves.

Intent data bridges this gap by revealing behavioral signals from these anonymous research activities. When you layer intent data into your ROAS measurement, you can:

Track engagement before conversion. See which accounts increase their research activity after exposure to your campaigns, even if they haven’t visited your website yet.

Identify buying group influence. Monitor multiple personas within target accounts to understand how different campaigns reach different stakeholders.

Measure true incrementality. Compare intent signal changes between accounts exposed to your campaigns and similar accounts that weren’t, proving your campaigns create measurable impact.

For example, Intentsify’s intelligence connects advertising exposure to downstream buying behaviors by monitoring changes in intent signals and engagement patterns post-campaign. This allows teams to identify which ads and channels most effectively move prospects through the funnel — and calculate ROAS based on influenced pipeline, not just last-click conversions.

The Bottom Line

ROAS optimization for B2B brand campaigns requires looking beyond last-click attribution. Traditional metrics make your awareness campaigns look ineffective because they can’t measure influence that happens before conversion.

The solution isn’t abandoning measurement — it’s expanding it. Layer program metrics with influenced pipeline tracking and multi-touch attribution to see the complete picture of how your campaigns drive results.

Your display campaigns build awareness. Your CTV ads reach buying committees. Your audio spots influence consideration. These campaigns work — but only if you measure them correctly.

Start optimizing ROAS by measuring what actually matters: influenced pipeline, not just last-click conversions. Download our complete guide: The End of Wasted Impressions: AI-Powered Intent in Digital Advertising

FAQs

What’s a good ROAS for B2B programmatic campaigns?

B2B ROAS varies significantly by campaign objective and sales cycle length. Bottom-funnel campaigns might achieve 5:1 or higher, while upper-funnel brand campaigns typically show 2:1-3:1 when measured via last-click, but 8:1-12:1 when including influenced pipeline. The key is measuring ROAS appropriately for each campaign type rather than applying a single standard.

How do I measure ROAS when prospects don’t fill out forms?

Use intent data to track behavioral changes after ad exposure. Monitor increases in research activity, content consumption, and engagement patterns across target accounts. Flag accounts showing elevated intent signals as “influenced” and track their progression through the pipeline. This approach measures impact even when prospects remain anonymous during their research phase.

Should I stop using last-click attribution?

No — use it alongside other models. Last-click shows which campaigns capture existing demand effectively. But add first-touch attribution to see which campaigns create demand, and influenced pipeline tracking to measure brand campaign impact. ROAS optimization requires multiple perspectives, not a single attribution model.