AI Overviews surface in more than 60% of Google’s commercial queries, and AI chatbots like ChatGPT, Claude, and Perplexity are replacing traditional search as buyers research products before they reach your website.
For enterprise and ecommerce operators, this isn’t a new trend; it is happening right now.
Old SEO playbooks focused on ranking for ten organic links no longer work if your customers are searching for recommendations through AI assistants. You need an agency that can optimize your website and content for traditional search engines and for the next generation of generative engine optimization.
And most agencies don’t have this experience yet. They’ll still pitch you link building and blog posts.
We tested seven of the top SEO agencies for enterprise ecommerce and scored them based on:
- Technical SEO depth
- Generative engine optimization/AI expertise
- Enterprise/ecommerce experience
- Revenue-focused strategy
- Proprietary methodology
Our highest scorers had both the technical SEO chops and AI SEO expertise to deliver real results, not just marketing teams tacking on “SEO services” as an afterthought.
Here’s the quick comparison of the top seven.
Quick Comparison
Scan core positioning and AI readiness across all agencies. Founded dates reveal market maturity, while AI search focus separates pioneers from traditional players.
| Firm | Core Strength | AI Search Focus | Best For |
| Organic Hackers | Technical SEO + revenue strategy | LLM retrieval and AI search optimization | Large ecommerce sites needing technical SEO depth |
| SALT.agency | Technical SEO and JavaScript optimization | AI search optimization | Complex websites and global SEO requirements |
| DEJAN | Technical SEO + AI search optimization | Selection Rate Optimization (SRO) | Brands focused on AI search visibility |
| Onely | Technical SEO, JavaScript, and migrations | GEO and AI search optimization | Complex ecommerce websites and migrations |
| iPullRank | Enterprise SEO + Relevance Engineering | AI search + content strategy | Enterprise brands combining SEO, content, and AI search |
| Greenlane Marketing | SEO + broader digital marketing | AI-driven search considerations | Businesses needing SEO alongside paid media, UX, and analytics |
| Brainlabs Digital | SEO, media, analytics, and creative | AI and marketing measurement | Brands combining SEO with broader media and measurement |
Top 7 SEO Agencies for Large Ecommerce Websites
Enterprise ecommerce SEO requires technical expertise and experience managing large product catalogues, category pages, and complex site structures. These seven agencies offer services relevant to challenges such as faceted navigation, organic revenue growth, and AI search optimization for large ecommerce websites in 2026.
Organic Hackers
Organic Hackers is a technical SEO agency focused on tech-first, revenue-driven campaigns built to grow large websites’ visibility, traffic, and sales. The approach combines advanced technical SEO with shopping-first strategy and website performance optimization, treating technical infrastructure as a foundation for organic growth.
The agency specializes in SEO-proof website migrations, strong site structure, and technical SEO for complex websites. Its work addresses root-level issues such as multi-market subfolder cannibalization, JavaScript rendering delays, crawl budget leaks, and indexation problems. Organic Hackers also directs and monitors internal or external developer teams, providing technical specifications for technologies such as Shopify Liquid, React/Next.js, and server configurations.
AI search work focuses on optimizing site architecture for retrieval by platforms such as Google AI Overviews, ChatGPT, and Perplexity, supported by custom monitoring dashboards. The agency aims to restore indexation health and achieve 2x–5x growth in organic search performance over 6–12 months. A free Tech SEO Audit session is available for businesses evaluating their technical SEO needs.
- Advanced technical SEO and SEO-proof migrations
- Shopping-first strategy and website performance optimization
- Developer guidance, technical specifications, and implementation monitoring
- Technical oversight addressing complex crawling, rendering, and indexation issues
- LLM retrieval optimization and custom monitoring dashboards
- Free Tech SEO Audit session available
DEJAN
DEJAN is an SEO agency focused on technical SEO and AI search optimization. Its work covers how websites and brands are represented across AI-driven search platforms, including Google AI Overviews, ChatGPT, Claude, and Perplexity.
The agency has developed its own Selection Rate Optimization (SRO) approach, designed to measure how likely a brand is to be selected or cited in AI-generated answers. Its services also include machine-readable technical SEO, AI sentiment analysis, and Google Search Grounding.
DEJAN applies these techniques to website architecture, product pages, and other technical elements that can affect how information is discovered and interpreted by search engines and AI systems. The agency also publishes research and analysis related to generative search and AI retrieval.
- Selection Rate Optimization (SRO) for AI search visibility
- AI sentiment analysis and machine-readable technical SEO
- Optimization related to Google AI Overviews and other AI search platforms
- Services covering Google Search Grounding
Brainlabs Digital
Brainlabs Digital is a digital marketing agency that combines SEO, media, analytics, and creative services. Its approach focuses on measuring marketing activity against business and revenue outcomes rather than relying only on channel-specific metrics.
The agency uses methods such as incrementality testing, multi-touch attribution, and media mix modeling to evaluate how different marketing activities contribute to overall performance. These measurement approaches can help businesses assess the role of paid media and organic search within a broader marketing strategy.
Brainlabs also works with AI tools and platforms such as Semrush, SEOClarity, Claude, and Amazon Marketing Cloud. Its broader service model makes it relevant to enterprise brands looking to combine SEO with media, measurement, and other digital marketing activities.
- SEO, media, analytics, and creative services
- Measurement methods including media mix modeling, incrementality testing, and multi-touch attribution
- Revenue-focused planning and performance measurement
- Work with marketing and analytics platforms, including Amazon Marketing Cloud
iPullRank
iPullRank is an enterprise SEO, content strategy, and AI search agency. Its services cover technical SEO, content strategy, digital PR, audience research, and optimization for AI-driven search platforms.
The agency uses a framework called Relevance Engineering, which combines areas such as AI, information retrieval, content strategy, and user experience. Its AI search work focuses on helping brands improve how their content is discovered and represented across platforms such as ChatGPT, Claude, Perplexity, and Google AI Overviews.
Content Resonance and Audience Research are also part of iPullRank’s offering. These services address how content meets audience needs and how brands can build visibility across traditional and AI-driven search. Its technical SEO services are relevant to large websites managing complex structures and search requirements.
- Relevance Engineering framework combining AI, information retrieval, and content strategy
- GEO and AI search optimization across multiple platforms
- Digital PR, Content Resonance, and audience research
- Technical SEO for enterprise websites
Onely
Onely was founded in 2019 by Bartosz Góralewicz. The agency focuses on technical SEO and also provides services for AI search and generative engine optimization.
Its GEO and AI Search Optimization services address how brands and their information appear in AI-generated responses across platforms such as ChatGPT, Perplexity, Google AI Overviews, and Claude. This combines technical SEO expertise with optimization for emerging AI search experiences.
Onely also offers website migration and International SEO services, alongside work involving JavaScript SEO, crawling, rendering, server logs, and site architecture. These capabilities are relevant to ecommerce websites with complex technical requirements, including platform transitions and international structures.
The agency publishes research and updates related to technical SEO and AI search. Pricing is not listed as a fixed package on its website, so businesses need to contact Onely for project-specific details.
- GEO & AI Search Optimization for multi-engine visibility
- Site migration expertise for platform transitions
- International SEO services for global ecommerce
- Visibility drop recovery for traffic emergencies
- Technical SEO audits with actionable depth
SALT.agency
SALT.agency works with brands on technical SEO and AI search optimization. Its services include JavaScript and rendering optimization, website architecture reviews, server log analysis, and website migrations. These capabilities can be relevant to ecommerce websites with large product catalogues or JavaScript-based platforms.
The agency also emphasizes collaboration with development and marketing teams during technical SEO projects. This can involve reviewing technical issues, preparing recommendations, and helping internal teams prioritize and implement changes.
Its wider technical offering includes website performance optimization, Core Web Vitals, and technical SEO for LLM-based search. SALT.agency is based in the UK and works with businesses managing complex websites and technical search requirements.
- AI Search Optimisation for multi-engine visibility
- JavaScript & Rendering Optimisation for modern stacks
- Server Log Analysis at enterprise scale
- Direct expert access model, no middleman layers
- Website Performance Optimisation tied to revenue
Greenlane Marketing
Greenlane Marketing is a digital marketing agency offering SEO, paid media, UX, and analytics services. Its SEO work covers technical SEO, on-page optimization, content, link acquisition, and local SEO.
The agency describes its approach as tailored to each client’s needs rather than based on a standardized strategy. Its broader service offering allows SEO to be combined with paid media, user experience, and analytics when required.
Greenlane also discusses the role of experience, expertise, and authority in search, including how useful, original content can support visibility in traditional and AI-driven search. Its services are relevant to businesses looking for technical and broader search marketing support.
- Full-spectrum capabilities: technical, on-page, off-page, and local SEO, plus paid media, UX, and analytics under one roof.
- Proactive beyond task execution—clients praise them for finding ways to improve the business, not just organic traffic.
- Service audits praised by technical SEO buyers for depth and thoughtfulness.
How to Shortcut This List
Enterprise ecommerce sites face different AI search maturity levels and technical debt. Your top constraint determines which agency bucket fits best.
- AI-first optimization specialists: DEJAN, Onely, and iPullRank reverse-engineer language models to earn brand mentions in ChatGPT, Claude, and Perplexity responses as well as Google AI Overviews
- Technical SEO + revenue focus: Organic Hackers and SALT.agency are known for extensive crawling, JavaScript rendering, and site re-structures for high-volume catalog sites that generate significant revenue increases
- Full-service media integration: Greenlane Marketing, Brainlabs Digital, blend SEO, paid search, attribution modelling, and cross-channel measurement when you need one partner for the whole funnel.
Conclusion
For large ecommerce businesses looking to gain an edge in 2026, finding partners that have expertise in both traditional SEO and new AI search channels is essential.
The following companies excel at one or the other, or both, while also having a track record of working with enterprise brands. All of these agencies are deeply technical but vary in their level of AI search expertise, proprietary strategies, and approach to the enterprise space.
Consider your current situation and whether you’re planning a platform migration, want to optimize for AI-generated search results, or are looking to leverage advanced shopping feeds to boost revenue. Then, work with two agencies on this list to conduct technical audits, compare their plans for AI search and revenue attribution, and test with the company that best meets your 2026 goals. Time is of the essence.