Finding the right ecommerce marketing agency can make or break your growth trajectory. Most DTC brands waste over 76% of their marketing budget goes to waste [1]. They end up with agencies that promise the moon but deliver slow turnarounds, generic strategies, and reports full of vanity metrics that don't move the revenue needle.
The stakes are high. Global ecommerce sales hit $6.9 trillion in 2025, growing 8.6% year-over-year [2]. Mobile commerce now accounts for 59% of all online sales [3]. The brands winning in this environment aren't necessarily spending more—they're working with agencies that understand multi-channel orchestration, move at platform speed, and obsess over commercial metrics like ROAS and customer acquisition cost instead of impressions and reach.
We analyzed dozens of ecommerce marketing agencies and identified five that consistently deliver measurable results for brands in your position. No fluff—just agencies that understand multi-channel commerce, move fast, and optimize for revenue instead of vanity metrics.
What Makes a Great Ecommerce Marketing Agency?
Before diving into our picks, here's what separates exceptional agencies from mediocre ones:
They understand the full ecommerce stack. From Shopify to Amazon to paid ads across multiple channels, great agencies know how every piece connects. They don't just run campaigns—they orchestrate entire growth systems.
They move at ecommerce speed. Traditional agency timelines of 2-3 weeks per campaign don't cut it anymore. The best agencies launch, test, and iterate within days, not months.
They focus on commercial metrics. Views and impressions mean nothing if they don't translate to revenue. Top agencies obsess over ROAS, customer acquisition cost, average order value, and lifetime value.
They provide strategic guidance, not just execution. The agencies worth hiring don't just take orders—they challenge your thinking, bring data-backed recommendations, and help you see blind spots before they become expensive mistakes.
With that framework, here are five agencies making real impact for ecommerce brands in 2025.
1. Liquify
Best for: Shopify brands that need deep technical expertise and data-driven optimization
Liquify specializes exclusively in Shopify and Shopify Plus, positioning themselves as one of the highest-ranked official Shopify Experts globally [4]. Unlike generalist agencies, their laser focus means they live and breathe everything Shopify.
What sets Liquify apart is their data-obsessed approach to ecommerce. While most agencies rely on opinions and best practices, Liquify tests everything systematically. Their code powers stores generating over $250 million in combined annual sales [5].
The agency handles the complete spectrum: custom theme development, bespoke app creation, platform migrations, and conversion rate optimization. They're particularly strong with brands that have grown beyond simple themes and need custom solutions that scale.
Remarkably, 90% of their new clients come through personal recommendations, and Shopify themselves frequently refer merchants to Liquify [4]. That kind of organic growth speaks volumes about their execution quality.
Pricing: Custom pricing based on project scope. Typical projects start from several thousand dollars.
Who it's for: Established Shopify brands doing $1M+ annually that need technical sophistication and proven conversion optimization tactics.
2. Disruptive Advertising
Best for: Brands ready to scale aggressively with data-driven paid media and a performance guarantee
Disruptive Advertising brings an unusual proposition to ecommerce: they guarantee measurable growth within 90 days or refund your investment. With over 350 five-star reviews on Clutch and an average client rating of 4.8, they've built credibility by consistently delivering results.
The agency manages over $450 million in annual ad spend for clients and has helped ecommerce brands achieve remarkable outcomes. For example, they helped Nani Swimwear achieve a 510% revenue increase, 75.97% decrease in cost per add-to-cart, and 942.56% lift in adds to cart [6]. Another client, USA-CLEAN, saw improved profitability through optimized Google Shopping and YouTube ads [6].
Disruptive's model differs from typical agencies. They operate month-to-month without long-term contracts, giving brands flexibility to scale up or down based on results. Their blend of SEO and paid media strategies helps brands see an average of 91% total sales growth and 86% net sales increase [6].
The agency only accepts about 10% of companies that reach out, ensuring they work exclusively with brands where they're confident they can drive meaningful impact [7].
Pricing: Custom pricing with a 90-day performance guarantee. Minimum engagement depends on ad spend and scope.
Who it's for: Ecommerce brands with proven product-market fit ready to invest in aggressive, data-backed growth across paid channels.
3. Eastside Co
Best for: International brands wanting comprehensive Shopify Plus services and long-term partnership
Established in 2012, Eastside Co is one of the world's most trusted Shopify Plus Partners [8] with a team of 80+ specialists across offices in London, New York, Birmingham, and Dubai. They've generated over $325 million for clients and developed 500+ Shopify stores [9].
For Origin Coffee, they launched a subscription business on Shopify 2.0, improving sales by 23% in the first month after launch [10].
What distinguishes Eastside Co is their full-service approach. Beyond design and development, they provide growth services including CRO, PPC, email marketing, SEO, and international expansion support. They've won multiple awards, including Best Shopify Plus Agency (EMEA) and European CRO Agency of the Year [11].
Pricing: Custom pricing for enterprise-level services. Projects typically suit brands with substantial budgets for comprehensive solutions.
Who it's for: Brands doing $5M+ annually that need an agency capable of handling complex technical builds, international expansion, and ongoing optimization.
4. Swanky
Best for: Brands wanting award-winning CRO and comprehensive growth services on flexible retainers
Swanky operates as an international Shopify Platinum Partner with teams across the UK, Australia, and France, supporting clients globally [12]. They've spent 15 years refining a data-driven approach to ecommerce growth that's earned them recognition as European CRO Agency of the Year [13].
The agency excels at conversion rate optimization backed by rigorous testing. For one FMCG retailer, they used systematic A/B testing to increase average order value by 32% [14]. For G-Rack, they implemented an experimentation program that boosted conversion rates and delivered 213% ROI in year one [15].
Swanky's strength lies in their flexible retainer model, where clients engage them for 3-50 days per month across multiple services: CRO, paid search, paid social, email marketing, SEO, and analytics [16]. This flexibility allows brands to scale support up or down based on current priorities.
Pricing: Flexible retainer pricing from 3-50 days per month. Exact costs depend on services and scope.
Who it's for: Brands seeking a long-term ecommerce partner that can provide strategic guidance and execution across the full marketing funnel.
5. SalesDuo
Best for: Brands selling on Amazon and multichannel marketplaces that need AI-powered expertise
SalesDuo brings something unique to the table: a team of ex-Amazon employees, including the former Head of Amazon's Vendor Management Program, combined with proprietary AI systems for automated decision-making [17]. They manage both Amazon Vendor Central and Seller Central operations.
The agency has driven remarkable results for clients. One brand more than tripled their Amazon sales after partnering with SalesDuo. Another client experienced 134% year-over-year growth on Amazon while successfully expanding to Walmart Marketplace [18].
SalesDuo's AI-powered platform automates critical decisions around pricing, inventory, advertising, and content optimization—handling the 24/7 demands of marketplace management that overwhelm most internal teams. They cover the complete ecosystem: account management, PPC advertising, content optimization, Enhanced Brand Content, chargeback management, and EDI integration for seamless order processing [20].
With over 250 brands in their portfolio and an average NPS score demonstrating strong client satisfaction, SalesDuo has proven they can scale marketplace operations efficiently [17].
Pricing: Custom pricing based on revenue managed and services required. Tailored packages for founder-led brands, brands with existing teams, and enterprise companies.
Who it's for: Ecommerce brands already selling or planning to sell on Amazon, Walmart, and other marketplaces who want expert management and AI-driven optimization.
Bonus #6. Needle - the alternative to traditional agencies
Best for: Fashion, beauty, and lifestyle DTC brands tired of slow agencies and expensive retainers
What 200+ brands switched to after burning money on retainers...
Needle isn't a traditional agency. It's an AI-powered orchestration platform with humans in the loop—built specifically for fashion, beauty, and lifestyle brands doing $1-10M annually.
Traditional agencies take 2-3 weeks per campaign and charge $5K-10K monthly retainers. Needle connects to your existing stack (Shopify, Meta, TikTok, Klaviyo), generates campaign ideas (ads & emails), produces creative assets, and launches across channels within 48 hours. Human strategists and designers refine everything before launch.
For work-leisure brand As Intended, each UGC video previously took 40+ hours. Within the first month on Needle, they built an evergreen Meta funnel and replaced their entire UGC workflow with weekly creative. Marketing efficiency ratio doubled from 5.6x to 11.1x in 60 days.
Brands on Needle grow 177% on average after 12 months and reduce fixed marketing costs by 62%. They launch multiple campaigns weekly, testing more angles while competitors wait on agency deliverables.
Pricing: Typically ~20% of ad spend. So $5K/month in Facebook ads = ~$1K for Needle (strategy + creative + launch + optimization). Compare that to $5K-10K agency retainers for similar output.
Who it's for: Fashion, beauty, and lifestyle DTC brands doing $1M-$10M who want to launch campaigns weekly at a fraction of traditional agency costs.
Comparison Table
The Bottom Line
The ecommerce landscape is more competitive than ever. Global retail ecommerce sales reached $6.9 trillion in 2025 [2], but only 28% of marketers are effectively using the available channels. Mobile commerce alone accounts for 59% of total ecommerce sales.
The brands winning in 2025 aren't the ones with the biggest budgets—they're the ones working with partners who understand multi-channel orchestration, move at platform speed, and optimize ruthlessly for revenue.
Choose Liquify if you're on Shopify and need deep technical expertise combined with data-driven conversion optimization.
Choose Disruptive Advertising if you want aggressive paid media growth backed by a 90-day performance guarantee and proven results.
Choose Eastside Co if you're an established brand needing comprehensive Shopify Plus services, international expansion support, and long-term partnership.
Choose Swanky if you want award-winning CRO services and flexible growth support across the full marketing funnel.
Choose SalesDuo if Amazon and marketplace channels are critical to your growth strategy and you want AI-powered optimization from ex-Amazon experts.
Choose Needle if you're stuck managing too many tools and agencies, burning cash on slow retainers, and need to move 10× faster at a fraction of the cost—launching campaigns weekly instead of monthly.
Whatever you choose, the key is moving fast and testing relentlessly. The brands that figure this out in 2025 will have a massive advantage over competitors still stuck in traditional agency relationships.