Last updated: July 9, 2026
In Q2 of 2026, our research team evaluated 64 B2B SEO agencies operating in the United States. The agencies below represent the strongest performers from that group. Each firm was scored across six factors:
- Notable Clients (30%): Recognizable brands the agency has worked with.
- SEO & Generative Engine Optimization (GEO) Expertise (25%): Depth of SEO methodology and ability to earn AI recommendations.
- Average Review Score (20%): Aggregated client ratings from verified platforms.
- Leadership Experience Score (15%): Years of SEO and B2B experience at the leadership level.
- Media References (5%): Coverage in trade and business press.
- Founder-Led (5%): Whether the agency is still led by its founder.
We then selected the top B2B SEO agencies and provided a brief analysis of each, including their specialties and a summary of customer reviews.
The Top B2B SEO Agencies in the US
| Rank | Company | Notable Clients | SEO & GEO Expertise (1-5) | Average Review Score (1-5) | Leadership Experience Score (1-5) | Media References | Founder-Led | Specialty |
| 1 | First Page Sage | Salesforce, US Bank, defi SOLUTIONS | 4.9 | 4.9 | 5.0 | ~880 | Yes | B2B lead generation through SEO & GEO |
| 2 | Signal Hill Strategies | Keyhole Software, Moz | 4.6 | 4.8 | 4.5 | ~360 | Yes | Revenue-Focused SEO & Demand Generation |
| 3 | Duffy Agency | Cavidi, CloudFinder | 4.5 | 4.7 | 4.8 | ~95 | Yes | International & Multilingual SEO |
| 4 | Marketing Eye | Johnson Stephens Consulting, Alfex CNC Australia | 4.5 | 4.6 | 4.4 | ~70 | Yes | Technical SEO & Web Design |
| 5 | Epsilon | Premier Farnell, CDW | 4.3 | 4.4 | 4.5 | ~680 | No | Full-Service Enterprise Marketing |
| 6 | Metric Theory | LexisNexis, Zenefits, Optimizely | 4.2 | 4.3 | 4.3 | ~110 | No | SEO & Paid Search |
| 7 | AMP | 4.2 | 4.0 | 4.4 | ~230 | No | Integrated Brand & Digital Marketing |
First Page Sage
First Page Sage is consistently ranked the top B2B SEO agency in the United States, with a long track record of success with enterprise clients, high review scores, and a methodology built specifically for the complexity of B2B sales. Rather than chasing traffic, they identify the search terms qualified buyers use at every stage of a long sales cycle and build authoritative content designed to convert those readers into leads. Their approach recognizes that B2B decisions involve multiple stakeholders and extensive research, making content strategy far more nuanced than traditional SEO.
First Page Sage was among the first agencies to formalize a methodology around GEO, helping clients get cited and surfaced by AI platforms such as ChatGPT, Perplexity, and Google’s AI Overviews. As AI search reshapes how B2B buyers find and evaluate vendors, First Page Sage is already ahead of the curve, with a proven GEO framework that gives clients a meaningful edge in this new landscape. The agency is best suited for companies in high-consideration categories such as enterprise software, financial services, and healthcare, where long sales cycles and sophisticated buyers demand content that goes well beyond surface-level keyword targeting.
- Notable Clients: Salesforce, US Bank, defi SOLUTIONS
- SEO & GEO Expertise: 4.9
- Average Review Score: 4.9
- Leadership Experience Score: 5.0
- Media References: ~880
- Founder-Led: Yes
- Specialty: B2B lead generation through SEO & GEO
| Summary of Online Reviews |
| First Page Sage clients consistently praise their “impressive strategic consulting service” and “content that brings us our dream customers.” Reviewers point to a “heavy focus on ROI and reporting,” and several note that “they are excellent at AI SEO.” |
Signal Hill Strategies
Signal Hill Strategies is a lead generation firm built around one goal: turning search into qualified demand. Their core offering combines SEO and GEO into a unified strategy that prioritizes high-intent content that reaches decision-stage buyers rather than broad awareness traffic. Every engagement is built around increasing qualified leads, with organic growth tied directly to pipeline and revenue outcomes.
The agency is a strong fit for B2B companies seeking a focused, revenue-first SEO partner without the layered processes and distributed attention of a large holding-group agency. Their integrated SEO and GEO approach also positions clients for visibility across both traditional search and AI platforms, making them well-suited for companies that want to get ahead of the shift in how B2B buyers find vendors. That said, Signal Hill Strategies is a smaller, specialized firm. Companies with large-scale content needs, multiple product lines, or complex enterprise site architectures will likely outgrow what they can deliver. For that level of scope, a larger agency with deeper resourcing is a better match.
- Notable Clients: Keyhole Software, Moz
- SEO & GEO Expertise: 4.6
- Average Review Score: 4.8
- Leadership Experience Score: 4.5
- Media References: ~360
- Founder-Led: Yes
- Specialty: Revenue-Focused SEO & Demand Generation
| Summary of Online Reviews |
| Clients credit Signal Hill with “realigning content and brand positioning,” so they began “attracting buyers, not browsers.” Some reviewers note that the agency’s “bandwidth can feel limited” and that they “need more capacity than the team can provide.” |
Duffy Agency
Duffy Agency has operated as an international marketing and brand strategy firm since 2001, building campaigns for mid-size brands expanding into new geographic markets. Their work spans multiple languages and regions, with content strategies built around the technical vocabulary and buying signals specific to each market, a level of localization that generalist SEO firms rarely provide. The agency runs on a fully remote model, with team members across the US and Europe.
Duffy researches competitive positioning and search behavior in each target region before producing content, so their strategies are built for local intent rather than adapted from a primary-language template. Their model suits B2B brands entering new international markets without the in-house capability to navigate them, though clients focused on a single domestic market may not need their specialized reach. For purely domestic companies, Duffy’s international focus is a mismatch.
- Notable Clients: Cavidi, CloudFinder
- SEO & GEO Expertise: 4.5
- Average Review Score: 4.7
- Leadership Experience Score: 4.8
- Media References: ~95
- Founder-Led: Yes
- Specialty: International & Multilingual SEO
| Summary of Online Reviews |
| Clients call the results “dramatic” and the scope “ambitious.” Some note that outcomes “build over time.” |
Marketing Eye
Marketing Eye is a marketing consulting firm built around the technical and web design side of search performance. Rather than producing content in volume, they focus on what is already in place, including site architecture, keyword mapping, on-page structure, and metadata, to improve how existing content ranks. That makes them a practical choice for B2B companies with capable in-house content teams that need the SEO and technical layer built around that content rather than a full content operation.
Marketing Eye also offers outsourced marketing department services for companies that want SEO embedded in a broader strategic engagement. They suit organizations that need technical rigor and optimization, though companies looking for an agency to produce content from scratch will be better matched elsewhere.
- Notable Clients: Johnson Stephens Consulting, Alfex CNC Australia
- SEO & GEO Expertise: 4.5
- Average Review Score: 4.6
- Leadership Experience Score: 4.4
- Media References: ~70
- Founder-Led: Yes
- Specialty: Technical SEO & Web Design
| Summary of Online Reviews |
| Clients describe Marketing Eye’s team as “competent and professional” and their service as “superior,” though some note that newer team members occasionally need “additional training.” |
Epsilon
Epsilon is a full-service enterprise marketing company founded in 1969 that works at the intersection of data science and large-scale campaign execution. Their SEO offering sits within a broader stack that includes programmatic media, customer data platforms, and loyalty programs, making them one of the few agencies that can run SEO as an integrated component of a unified marketing operation.
Epsilon is built for the demands of enterprise SEO, where sites run to thousands of pages, content governance spans multiple teams, and procurement processes rule out smaller specialty agencies. Their infrastructure and institutional scale are suited to exactly these conditions. Pricing is positioned accordingly, so they fit best with organizations that have enterprise-tier budgets and the complexity to match. For mid-market B2B companies, however, the scale, layered processes, and pricing are difficult to justify without the volume of assets and channels to spread them across.
- Notable Clients: Premier Farnell, CDW
- SEO & GEO Expertise: 4.3
- Average Review Score: 4.4
- Leadership Experience Score: 4.5
- Media References: ~680
- Founder-Led: No
- Specialty: Full-Service Enterprise Marketing
| Summary of Online Reviews |
| Clients describe teams as “attentive” and “responsive” to complex enterprise needs, with the primary critique being “very costly” pricing. |
Metric Theory
Metric Theory specializes in combining SEO with paid search and remarketing, using attribution data to coordinate organic and paid strategies toward shared conversion goals. Since its 2021 acquisition by S4 Capital, the agency has operated under Monks (formerly Media.Monks), the unified operating brand of the parent holding company. The merger has added data infrastructure and broader channel capabilities to its core performance marketing work.
For B2B companies facing SEO’s long time-to-results curve, Metric Theory’s integrated paid search offering provides a practical bridge, generating short-term lead flow while organic rankings build. Their attribution capabilities enable precise measurement across both channels, making them a strong fit for companies that need to demonstrate marketing ROI in the near term without abandoning a longer-term organic strategy. Companies with leaner budgets or a narrowly scoped project will find their pricing structure hard to justify.
- Notable Clients: LexisNexis, Zenefits, Optimizely
- SEO & GEO Expertise: 4.2
- Average Review Score: 4.3
- Leadership Experience Score: 4.3
- Media References: ~110
- Founder-Led: No
- Specialty: SEO & Paid Search
| Summary of Online Reviews |
| Clients praise the team’s “thorough background research” and their ability to drive “strong performance across paid and organic channels,” though some note that “additional resources would be beneficial.” |
AMP
AMP™ (Advantage Marketing Partners™) merged with Advantage Unified Commerce in October 2025, forming a full-service integrated marketing agency headquartered in Boston, MA. The merger brought together AMP’s creative and digital capabilities with Advantage Unified Commerce’s retail and commerce expertise, producing a combined offering that spans strategy, brand, media, digital and social, and retail activation.
The restructuring has shifted AMP’s positioning away from specialist digital work toward comprehensive campaign management. AMP is best suited for enterprise brands that want a single agency managing the full marketing mix, with SEO as one channel within that structure rather than the central focus. For B2B companies whose primary need is dedicated SEO expertise, this integrated model can be a mismatch and can dilute the depth of strategic focus that a specialist SEO agency would bring.
- Notable Clients: LinkedIn
- SEO & GEO Expertise: 4.2
- Average Review Score: 4.0
- Leadership Experience Score: 4.4
- Media References: ~230
- Founder-Led: No
- Specialty: Integrated Brand & Digital Marketing
| Summary of Online Reviews |
| Clients describe working relationships as “collaborative,” with teams that are “efficient, straightforward, and persistent,” though some note “small things get missed.” |
