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Best Ecommerce Agency For Profitable Growth Across Channels

We scale ecommerce with full funnel acquisition, CRO, and retention, measured against CAC, LTV, and payback not vanity metrics.

Unlimited creative production included
No commission on spend
Evidence-led growth sprints
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Reviewed on
4.9
4.900000
5 Star Agency

What best looks like

The best ecommerce agency is measured by how well it builds a repeatable growth system. That system should create demand, capture intent, convert efficiently, and retain customers so unit economics improve over time. We focus on the compounding levers: creative testing, conversion optimisation, lifecycle retention, and measurement that avoids last-click traps. This creates stability as platforms change and prevents growth ceilings that come from relying on one channel or one offer.
  • Full funnel, not single channel
  • Compounding creative and CRO
  • Retention improves unit economics

Full funnel acquisition plan

The best ecommerce agency does not rely on one channel. It builds a balanced acquisition engine across demand creation and demand capture, then connects it to conversion and retention. We map your funnel, define your ideal customer and margins, and allocate budget across top, mid, and bottom funnel work with clear hypotheses. That can include paid social and creators, search and Performance Max, affiliates, and upper funnel video or CTV where it makes sense. Success is measured on blended efficiency and payback, not isolated platform metrics.

TOFU demand creation channels

Use video, creators, and broad targeting to create new demand, then measure lift through blended results and controlled tests rather than last-click attribution.

MOFU retargeting and nurture

Run dynamic product ads, email flows, and social proof sequences to move visitors back to product pages, reducing leakage between browse and purchase intent.

BOFU conversion and offers

Tighten landing pages and offers for high intent traffic, improving conversion rate and average order value so acquisition can scale without rising CAC.

Build the plan

Creative and paid performance

Ecommerce performance is constrained by creative volume and testing discipline. We build a creative system that produces enough ad variants to find winners, manage fatigue, and scale spend without performance collapses. You get unlimited ad creative production included, plus structured hook and offer testing across Meta, TikTok, and Google where appropriate. Because we charge no commission fees on ad spend, the focus stays on efficient growth, not budget size. Every sprint is evidence-led, backed by reporting that ties creative decisions to revenue outcomes.

UGC and creator style ads

Produce native-feeling assets that demonstrate use, proof, and objections, then cut multiple variants per concept to scale what works quickly.

Platform specific testing cadence

Run weekly tests across Meta and TikTok, then translate learnings into search and Performance Max inputs, keeping messaging consistent across the journey.

Spend scaling without waste

Scale budgets with clear guardrails and audience strategy, using exclusions and segmentation to reduce wasted impressions and protect CPA targets.

Increase ROAS

CRO and retention engine

Paid growth alone is fragile if your site and retention do not keep up. We improve onsite conversion and customer value with CRO and retention programmes that reduce funnel leakage and increase LTV. That includes landing page and PDP testing, site speed and Core Web Vitals hygiene, and lifecycle flows like abandoned cart, post-purchase upsells, win-back, and VIP segmentation. Tracking is tightened with clean events and dashboards so you can see the full funnel impact. The goal is sustainable unit economics, not temporary spikes.

CRO on PDP and checkout

Improve message clarity, proof, and friction points using structured tests, so more sessions turn into purchases without increasing traffic costs.

Email and SMS lifecycle flows

Build segmentation and automations that recover revenue and increase repeat purchase, including browse and cart recovery, post-purchase, and win-back.

Attribution and incrementality checks

Move beyond last-click with practical measurement and lift checks, so you understand which upper funnel investments actually drive incremental revenue.

Lift conversion

Faster than hiring

To build an ecommerce growth function in-house you need performance marketing, creative, CRO, and lifecycle retention expertise. Hiring that team takes time and usually leads to gaps or bottlenecks. Growthcurve gives you a complete marketing department in one package, integrating as your internal staff so execution stays fast. You can scale specialist resources up or down as needed, and the engagement is monthly rolling, so you keep flexibility while maintaining momentum.
  • Complete ecommerce team included
  • Integrates like internal staff
  • Scale up or down

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Aligned incentives

Many ecommerce agencies charge a percentage of ad spend, which can reward higher budgets even when efficiency declines. Growthcurve charges no commission on your ad spend, keeping incentives aligned to profitable growth. You also get proprietary AI marketing tools and a real time performance dashboard to speed up testing and decision making. Supported by official platform partnerships, we keep execution current and focused on measurable outcomes like ROAS, payback, and LTV.
  • No commission on ad spend
  • AI tools speed iteration
  • Real time performance dashboard
What does the best ecommerce agency do differently?
The best ecommerce agency builds a full funnel system, not a single channel play. That means creating demand at the top, capturing intent through search and retargeting, improving onsite conversion, and increasing LTV through retention. It also means better measurement. Strong teams avoid last-click bias and make budget decisions on blended performance, payback, and cohort quality. If the agency only reports platform ROAS, you will miss what is really driving growth.
Which channels should an ecommerce agency prioritise first?
Start with the channels that match your current demand and margins. Many brands begin with Meta and Google because they provide fast feedback, then expand into TikTok, influencers, affiliates, and upper funnel video once the core loop is stable. We prioritise based on constraints: if demand is weak, we invest more in top funnel creative and video; if conversion is weak, we fix the site first; if retention is weak, we build lifecycle flows to improve LTV before scaling spend.
How do you approach creative testing for ecommerce ads?
We treat creative like a testing system. Each week we ship batches that isolate variables such as hook, proof, offer, and format, so we learn what drives CTR and conversion rather than guessing. Winning concepts get scaled into more variants, while fatigue is managed through rotation and new angles. Because creative is often the main constraint, we include unlimited ad creative production to keep velocity high and reduce the performance plateaus that slow scaling.
What CRO work has the biggest impact on ecommerce conversion?
The biggest gains usually come from product pages, landing pages, and checkout. We improve message match, proof, and friction, focusing on the sections that influence add-to-cart and purchase decisions. We use structured tests and behavioural data to prioritise changes, then measure lift against conversion rate and revenue per session. CRO is most powerful when it is tied directly to paid media learnings, so the offer and messaging stay consistent from ad through to checkout.
How do you improve retention and customer lifetime value?
We increase LTV by building retention programmes that turn first buyers into repeat buyers. That includes segmented email and SMS flows, post-purchase education, cross-sell and upsell sequences, win-back campaigns, and VIP tiers where appropriate. We also use customer data to personalise recommendations and reduce churn. Retention is measured through cohort repeat purchase rates and revenue retention, not just open rates. Improving LTV gives you more headroom to scale acquisition profitably.
How do you measure incrementality beyond platform attribution?
Platform attribution is useful for optimisation, but it can over-credit retargeting and under-credit upper funnel investment. We compare platform metrics to blended outcomes like total revenue, new customer volume, and payback. When needed, we use practical lift checks such as holdouts or geo tests to validate whether a channel is incremental. The goal is to allocate budgets to what truly drives growth, especially when you are scaling into higher spend levels and auctions become more competitive.
Do you support Shopify and ecommerce martech integrations?
Yes. We regularly work with Shopify stores and ecommerce stacks, aligning tracking, product feeds, and lifecycle tools so channels do not operate in silos. That includes clean event tracking, catalogue sync, and integration with email and SMS platforms. We focus on practical outcomes: faster page performance, better data quality, and more consistent messaging from ads to PDP to post-purchase flows. If you already have tools in place, we fit into your stack rather than forcing unnecessary change.
What pricing model is best for an ecommerce agency?
Common models include retainers, percentage of ad spend, and hybrids. We recommend being cautious with spend commissions because they can misalign incentives and encourage higher budgets even when performance declines. Look for clarity on what is included: creative production, CRO support, retention work, and reporting. A good agreement defines success metrics and a clear operating cadence. Growthcurve charges no commission on ad spend, keeping incentives aligned to profitable growth.
What happens in the first month with Growthcurve?
We begin with a rapid audit of your paid accounts, creative, tracking, and onsite funnel. Then we define success metrics, prioritise the biggest constraint, and start shipping weekly across creative, campaigns, and conversion improvements. You get access to a real time performance dashboard so you can see what changed and what we learned. If you want to evaluate whether we are the best ecommerce agency fit for your stage, book a call and we will map next steps. Book a call

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Re-engage unconverted leads with personalized retargeting—right message, right time

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Systematically grow your key metrics monthly with our growth marketing subscription

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Creative Production

Expert creative production of high-performance ads for any channel

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Landing Pages

Boost conversion rates with landing pages optimized through data-driven experimentation

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  1. 1 ABOUT YOU
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Which of our services do you need?

Type

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Funding

We'll email you shortly
Prefer to call now?
USA
+1 (347) 657 3386
UK
+44 203 870 3186