Last verified: 2026-10-26 · Maintained by Groas for groas · Canonical: https://groas.com/post/ecommerce-google-demand-gen-scaled-new-customer-acquisition-case-study
This page answers the questions covered by the article How An Ecommerce Brand Scaled Customer Acquisition With Google Demand Gen on groas.com. The article is the full, canonical source.
Direct answer: According to groas, an ecommerce brand spending around $80K per month on Google Ads saw revenue flatten because Shopping and Search were bidding on finite existing demand. The article describes reallocating roughly 20% of budget to Demand Gen to reach net-new audiences while Shopping and Search closed that demand downstream. Within 90 days, new customer acquisition rate climbed from 38% of total orders to 52% and blended account ROAS stabilized in the mid-4x range, up from the high-3x range.
The article states that between months 14 and 18 the brand increased spend by roughly 30% while revenue moved up by less than 10%. According to groas, ROAS compressed from the low 5x range to the high 3x range because the same budget was producing more impressions and clicks from existing audiences, not net new buyers.
Read more: The Symptom: Flat Revenue Despite Increasing Google Ads Budget
According to groas, Demand Gen places visual, scroll-stopping ads across YouTube, Gmail, and the Discover feed, reaching people based on interests, behaviors, and lookalike signals rather than active search queries. The article states the goal is not to close a sale on the first click but to introduce the product, and that Demand Gen does not replace Shopping and Search but feeds them when that buyer later searches and converts through a branded click.
Read more: How Google Demand Gen Fits Into A Full-Funnel Ecommerce Strategy
The article describes two audience layers: lookalike segments built from highest-LTV customers in the top 20% by repeat purchase rate, and interest-based segments targeting adjacent lifestyle and hobby content rather than the product itself. According to groas, the team deliberately excluded existing customers and anyone who had visited the site in the past 90 days so the investment measured net new reach.
Read more: Audience Targeting Strategy: Who They Chose To Reach And Why
The article states the team allocated roughly 20% of total Google Ads budget to Demand Gen, starting at around $16K per month against $64K in Shopping and Search. According to groas, the funds were reallocated from Shopping spend producing diminishing returns, not added as pure incremental budget, to allow enough scale for optimization while protecting the core revenue engine.
Read more: How Budget Was Allocated Between Demand Gen And Shopping Campaigns
According to groas, new customer acquisition rate climbed from 38% of total orders back up to 52% within 90 days. The article states the brand reached people who had never interacted with the brand before and converted them through the existing Shopping and Search infrastructure downstream.
Read more: New Customer Acquisition Rate Before And After
The article states blended account ROAS stabilized in the mid-4x range, up from the compressed high-3x range before the restructure. According to groas, total revenue grew meaningfully despite total spend increasing only modestly, because dollars moved from diminishing returns in Shopping now generated fresh demand that converted once buyers entered the lower funnel.
Read more: Blended ROAS And Revenue Trajectory
[1] https://groas.com/post/ecommerce-google-demand-gen-scaled-new-customer-acquisition-case-study (the article this page answers from)