
I’ve learned that as AI-driven searches and fragmented media reshape brand discovery, the outdated “set it and forget it” mindset in marketing measurement is no longer effective.
Understanding impact isn’t just about watching dashboard data. Strategically, measurement is a dynamic feedback loop, guiding ad platform adjustments, which then yields better results and insights for my business.
Allow me to share how I construct a measurement flywheel that propels my growth efficiently.
The 4-step measurement cycle
Imagine, like me, you’re managing a Bay Area SaaS company, PowerLoop, specializing in AI-powered analytics. Heavy investments in Google Search, LinkedIn, and AI publication sponsorships are underway.
However, Google Ads boasts impressive ROAS, yet our CRM signals a critical gap: leads and opportunities aren’t directly traceable to specific campaigns, making it tricky to demonstrate marketing’s true board-level impact.

1. Platform ROAS
With Platform ROAS, I dive into platform data—be it Google Ads or Meta—powered by pixel and conversion APIs. Though beneficial for real-time optimization, platforms generally accentuate their impact.
At PowerLoop, Google Ads reports a $50 CPA, aligning well with targets, yet LinkedIn’s engagement doesn’t fully equate to conversions, raising concerns about unattributed leads.
Dig deeper: How to avoid marketing mix modeling mistakes that derail results
2. Back-end ROAS
The next phase, Back-end ROAS, leverages CRM intelligence—Salesforce, Shopify, etc.—linking ad investment to tangible database outcomes, crucial for filtering out ‘noise’ like refunds and fake leads.
In practical terms, PowerLoop reveals that many Google-signups were either incomplete or out-of-target market, prompting adjustments in targeting and campaign focus on LinkedIn.

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3. Incremental ROAS (iROAS)
iROAS tackles the “So what?”—unveiling the sales truly impacted by ads through mix modeling and incrementality tests, like geo-lift or holdout tests.
In practice, PowerLoop’s geo-lift experiment reveals Google Ads’ limited incremental impact compared to the potent brand awareness uplift from AI sponsorships.
Dig deeper: Why incrementality is the only metric that proves marketing’s real impact
4. Marginal ROAS (mROAS)
Finally, Marginal ROAS guides my decision on where to allocate the next dollar, as channels reach efficiency peaks following the law of diminishing returns.
Analyzing PowerLoop’s spend, I observe that while Google’s spend plateaus, AI sponsorships yield untapped growth and potential, urging a budget reallocation.

Why the cycle never ends
In truth, marketing measurement is a continual evolution, always grappling with the ever-fluctuating landscape, be it Google strategies today or ChatGPT impacts tomorrow.
I’ve embraced this at PowerLoop, adapting to new channels with an openness knowing past success doesn’t guarantee future outcomes, especially when relying solely on platform data risks wastage.
The objective isn’t finding a fixed ideal number, but maintaining agility, using iROAS and mROAS signals to drive innovation and efficiency across campaigns and channels.

Dig deeper: Break down data silos: How integrated analytics reveals marketing impact
Inspired by this post on Search Engine Land.


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