Global e-commerce sales topped $7 trillion in 2024, and our research projects that figure will pass $10.4 trillion by 2028, with online sales climbing toward 21% of global retail purchases.
Capturing a share of that growth requires an SEO agency built specifically for e-commerce, one that turns organic search into steady, compounding revenue.
Online shoppers no longer search the same way twice. They still Google their questions, but they’re just as likely to ask an AI assistant for a recommendation and buy straight from the answer it gives them.
That shift matters most for e-commerce brands, since organic search has historically been one of the highest-value, lowest-cost ways to reach ready-to-buy customers.
An agency that only optimizes for classic Google rankings is leaving revenue on the table. The best e-commerce SEO agencies build for both worlds, pairing proven SEO tactics with generative engine optimization (GEO) to put your brand in front of shoppers no matter where they’re searching.
We built this list around agencies with a track record of turning organic traffic into revenue for online retailers. Each entry breaks down what the agency does best, who they’ve worked with, and the kind of e-commerce brand they’re the strongest fit for.
- Siege Media: Best for Full-Service GEO
- OuterBox: Best for E-commerce
- WebFX: Best for Marketing Automation
- Coalition Tech.: Best for Full-Stack
- Searchbloom: Best for Local SEO
- Victorious: Best for Technical SEO
- NOVOS: Best for International SEO
- Inflow: Best for Analytics & CRO
- 1Digital Agency: Best for Migrations
- SmartSites: Best for Web Design
1. Siege Media
- Best for: Full-service GEO
- Headquarters: San Francisco, Austin, Chicago, and New York City
- Strengths: Creates SEO-focused content that drives rankings, LLM visibility, and traffic revenue in competitive industries, with native GEO built into every engagement
- Pricing: Custom pricing based on projected ROI and company budgets.
- Recognizable clients: Purple, AAA, and Instacart
Siege Media is a full-service GEO and SEO agency with over a decade of experience helping e-commerce brands grow through high-performing content.
Our e-commerce SEO services take a content-first approach, building assets like authoritative guides and data studies that earn rankings, links, and conversions. These performance wins have generated more than $148 million in annual client traffic value.
Through e-commerce content strategy, on-page optimization, digital PR, and affiliate placements that build LLM visibility, Siege Media has delivered standout results for e-commerce brands like Purple (224% increase in monthly organic traffic), AAA, and Instacart.
We’ve invested heavily in generative engine optimization, helping client brands surface in both traditional SERPs and AI-generated answers. Our affiliate and partnership marketing practice adds another layer, securing placements on the high-authority publisher and creator sites that LLMs already trust.
| Feature | Siege Media | Typical E-commerce SEO Agency |
|---|---|---|
| Content strategy | Full-funnel content ecosystems with editorial, interactive, and data assets | Blog posts and product page optimization |
| Link building | Organic digital PR earning editorial links at scale | Manual outreach or paid placements |
| GEO / AI optimization | Proprietary research on LLM citations; content built for AI visibility | Limited or no AI search strategy |
| Technical SEO | Site audits, CWV optimization, and architecture recommendations | Platform-specific technical fixes |
| Interactive content | Custom calculators, quizzes, and tools that drive links and conversions | Rarely offered or outsourced |
| Affiliate marketing | In-house, LLM authority focus | Rarely offered |
| Reporting | Traffic value, keyword rankings, link velocity, and engagement metrics | Keyword rankings and traffic reports |
| Industry research | Original data studies (Content Marketing Trends, OLR benchmarks, LLM engagement) | Third-party data citations |
2. OuterBox
- Best for: Technical E-commerce
- Headquarters: Akron, Ohio
- Strengths: Provides e-commerce web design and development services.
- Pricing: Custom pricing
- Recognizable clients: Touchstone Living, Embrace Pet Insurance, and Lethal Performance
If you’re interested in revamping your e-commerce website but also need SEO services, OuterBox can help.
OuterBox is an e-commerce SEO company that works with businesses of all sizes. Outerbox values lasting partnerships with clients and developed data-backed SEO strategies that affect all e-commerce channels.
Not only does OuterBox have an internal team of e-commerce SEO experts to help with content development, but it also has a team of e-commerce web developers to help with updating your website with the latest technology.
3. WebFX
- Best for: Marketing Automation
- Headquarters: Harrisburg, Pennsylvania
- Strengths: Offers its marketing automation software called MarketingCloudFX to grow client leads and sales.
- Pricing: Plans range from $2,500 to $8,000 per month.
- Recognizable clients: Furbo, Resource Furniture, and HydroWorx
WebFX is a digital marketing agency with more than 25 years of experience in the industry. They specialize in e-commerce SEO services and have worked across a variety of product industries.
They offer four packages varying in depth and pricing, allowing clients to choose exactly how much support they need. Their internal e-commerce SEO team also has experience with multiple platforms, including Shopify and WordPress.
In addition to SEO, WebFX created MarketingCloudFX, a revenue marketing software that provides in-depth sales insights for businesses with sales teams.
4. Coalition Technologies
- Best for: Full-Stack Development
- Headquarters: Los Angeles, California
- Strengths: Combines custom web development with SEO, rebuilding underperforming e-commerce stores with search optimization built into the framework.
- Pricing: Custom pricing
- Recognizable clients: Roku, Sony, and PayPal
Coalition Technologies is a full-service digital agency based in Los Angeles that blurs the line between design, development, and SEO. Rather than bolting optimization onto an existing site, their team specializes in rebuilding underperforming e-commerce stores with SEO baked into the framework from the ground up.
Their approach is especially well-suited for DTC and enterprise brands on platforms like Shopify, Magento, and WooCommerce that need both a technical overhaul and a search visibility strategy. Coalition’s in-house development team works alongside their SEO strategists, which means site speed, crawlability, and structured data are addressed during the build — not as an afterthought.
5. Searchbloom
- Best for: Local SEO
- Headquarters: Draper, Utah
- Strengths: Offers free online tools for e-commerce marketers, such as a schema generator and snippet preview tool.
- Pricing: Custom pricing
- Recognizable clients: Nature’s Seed, 1-800 Contacts, and ShirtSpace
If you’re looking for an agency that’s honed in SEO strategies for e-commerce clients, you may be interested in Searchbloom.
Searchbloom is a digital marketing company that specializes in e-commerce SEO. Searchbloom’s goal is to alleviate its client’s SEO marketing workload and support growth through SEO.
Searchbloom offers a few services for e-commerce clients needing help with ranking on the SERP and growing traffic, including keyword mapping, website technical support, and optimizing content. They also offer free tools for teams to use, like a schema generator tool.
6. Victorious
- Best for: Technical SEO
- Headquarters: Santa Monica, California
- Strengths: Pure-play SEO agency with no PPC or social media distractions, recognized five times as SEO Agency of the Year
- Pricing: Custom pricing based on project scope
- Recognizable clients: GoFundMe, Salesforce, Wayfair, and SoFi
Victorious puts all of its resources into one channel. That singular focus has paid off for e-commerce clients. For example, the agency delivered 200% year-over-year organic revenue growth for apparel brand Unionbay, helping them outrank major competitors.
Victorious pairs deep technical SEO work with a growing AI search practice. Their approach gives e-commerce clients coverage across both traditional rankings and the AI-generated answers shoppers increasingly rely on. Brands that want a specialist rather than a generalist will find a strong fit here.
7. NOVOS
- Best for: International SEO
- Headquarters: London, England, United Kingdom
- Strengths: Provides a free eBook guide to international e-commerce SEO strategy.
- Pricing: Custom pricing
- Recognizable clients: Antler, Totême, and Bloom & Wild
NOVOS is a younger U.K. e-commerce agency that’s proved to be a strong competitor in the international e-commerce SEO industry. As a Shopify Plus partner and multi-award-winning agency, NOVOS has built a reputation for helping e-commerce retailers expand internationally.
NOVOS’ mission is twofold: They want to support their clients’ growth and their internal team’s personal development. NOVOs provides SEO, digital PR, technical CMS, and content marketing services.
8. Inflow
- Best for: Analytics & CRO
- Headquarters: Denver, Colorado
- Strengths: Provides specialized Google Analytics 4 services for e-commerce businesses looking to migrate.
- Pricing: Custom pricing
- Recognizable clients: Simms, KEH Camera, and Vitrazza
Inflow is a digital SEO agency that develops tailored marketing strategies for e-commerce companies looking to grow their brands.
The team works closely with clients to understand their micro-industry, review past marketing efforts, align on goals, and plan for execution. This collaborative approach helps ensure every strategy is grounded in the client’s unique needs.
In addition to SEO, Inflow offers services like conversion optimization, paid social advertising, and migration support for businesses transitioning to Google Analytics 4.
9. 1Digital Agency
- Best for: E-commerce platform migrations
- Headquarters: Miami, Florida
- Strengths: Works exclusively with e-commerce brands across Shopify, BigCommerce, WooCommerce, and Magento
- Pricing: Hourly rates generally range from $150 to $199
- Recognizable clients: Steinway & Sons, Synchrony, Lenox, and Kate Spade
1Digital Agency works only with online retailers, and its focus shows in its specialization. The team has supported more than 400 e-commerce brands since 2012, building deep platform expertise across Shopify, BigCommerce, WooCommerce, and Magento.
Its strongest niche is migrations. The team plans platform switches with URL mapping, redirect rules, and schema parity so organic rankings carry over intact. That makes 1Digital a solid option for brands mid-migration or running storefronts across multiple platforms that want one team that understands the technical quirks of each platform.
10. SmartSites
- Best for: Web Design Integration
- Headquarters: Paramus, New Jersey
- Strengths: Combines e-commerce SEO with web design and PPC expertise
- Pricing: Custom pricing
- Recognizable clients: AGA Truck Parts, Pant Supply, and York Street Market
SmartSites is a full-service digital agency known for their data-driven SEO strategies and strong results in the e-commerce space. The team focuses on improving both visibility and conversion rates by pairing SEO with performance marketing and custom website design.
With experience across platforms like Shopify and WooCommerce, SmartSites builds tailored solutions that help online stores grow through increased traffic, better UX, and measurable ROI.
E-commerce Marketing at Siege Media
Ultimately, we firmly believe Siege Media is the best e-commerce SEO agency for your business. We build the content strategy, technical SEO, and digital PR your team needs while baking GEO into every engagement so your brand ranks in Google and gets cited in AI-generated answers. That’s how we turn organic traffic into steady revenue for e-commerce brands.
If you’re interested in learning more about how Siege Media navigates the e-commerce industry to bring results, check out some of our recent case studies, or contact us about our e-commerce marketing services.
