Top eCommerce Growth Agencies in the US

In 2025’s competitive eCommerce landscape, choosing the right marketing partner is about much more than creating content and running campaigns. Brands face evolving digital ad platforms, consumer shifts, privacy regulations, and a need for seamless omnichannel experiences. 

To thrive in this environment, eCommerce brands have to master performance media, conversion optimization, retention strategy, and cross-channel storytelling. Of course, this all has to happen under budget. The right growth agency becomes an extension of your team, helping you capitalize on market shifts, test faster, and scale with clarity. 

1. Avenue Z

Avenue Z delivers end‑to‑end eCommerce growth through a combination of strategic planning, creative production, and paid media execution. They’re experienced in social commerce—especially TikTok and Meta—and integrate tools like Shopify Plus, Klaviyo, and Recharge to drive performance.

With teams dedicated to performance, creative, influencer, and CRO across offices in Miami, New York, Boston, Orlando, and Los Angeles, Avenue Z builds scalable infrastructure for DTC and retail brands.

2. Disruptive Advertising

Disruptive Advertising is a performance-focused eCommerce marketing agency known for auditing thousands of ad accounts to optimize spend and improve ROAS. Their services include PPC (Google & Meta), CRO, and email marketing—often delivering measurable results within 90 days.

Clients benefit from deep analytics and real-time optimization that turn underperforming campaigns into scalable profit engines.

3. NoGood

NoGood is a New York-based growth agency with a no-fluff, experimentation-led approach to eCommerce marketing. Their team of strategists, creatives, and data scientists focuses on rapid testing and iteration to uncover scalable opportunities.\

Their AI-powered segmentation and forecasting tools help eCommerce brands fine-tune campaigns across social, search, and video channels.

4. WebFX

WebFX is a full-service digital marketing agency that has served eCommerce clients since the mid-1990s. Their proprietary platform, MarketingCloudFX, gives clients visibility into revenue attribution across channels like SEO, PPC, and email.

With a team of 500+ marketers and developers, WebFX builds and optimizes eCommerce websites that scale traffic and drive conversions.

5. LYFE Marketing

LYFE Marketing focuses on helping small to mid-size eCommerce businesses grow through social advertising and PPC. They’ve generated over $300M in revenue for clients using cost-efficient campaigns and retargeting strategies.

With a strong emphasis on Facebook, Instagram, and Google Ads, LYFE offers accessible monthly packages and proven ROI for scaling DTC brands.

6. Nuanced Media

Nuanced Media specializes in Amazon marketing and marketplace growth strategies. They optimize listings, storefronts, and sponsored ads while improving keyword targeting and A+ content for product pages.

Perfect for brands expanding from Shopify into Amazon, their team brings deep experience in CPG, health, and beauty categories.

7. Growth Rock

Growth Rock is a conversion rate optimization (CRO) agency that helps eCommerce businesses improve website performance through UX research, A/B testing, and behavioral analytics.

Their proprietary Purpose Framework translates qualitative and quantitative insights into higher-converting designs and content, which is especially valuable for DTC brands plateauing in growth.

Accelerate Your eCommerce Growth with the Right Agency Partner

Top eCommerce agencies are about more than just running ads. They can architect scalable systems that combine creative, analytics, tech integrations, and conversion optimization.

If your brand is ready for a full-funnel growth engine, Avenue Z offers performance media, social commerce expertise, influencer programs, and CRO capabilities designed to scale with precision.