10 SEO Content Marketing Agencies for B2B SaaS

We’re Campfire Labs, a B2B content agency that specializes in editorial SEO content. We’re on this list—but so are nine other agencies worth considering, because the right choice depends on what you actually need.

Some agencies listed here excel at high-volume programmatic content. Others focus on conversion optimization or content distribution. We’ve tried to be specific about what each agency does well and where they’re not the right fit, so you can make a smart decision.

Note: Pricing is approximate and based on publicly available information. Most agencies provide custom quotes based on scope.

The best SEO content agencies, listed

1. Campfire Labs

Best for: Editorial-quality SEO content that aligns with brand positioning and supports complex B2B sales. Companies that need content to influence buying committees, not just generate pageviews.

Not ideal for: Programmatic SEO, technical SEO, or high-volume content production. If you need 50 blog posts a month, we’re not built for that, and we wouldn’t pretend otherwise.

What makes us different: We approach SEO content through the lens of editorial quality and brand storytelling. Our work often incorporates original research, expert interviews, and narrative structure designed to resonate with sophisticated B2B buyers. We focus on content that ranks and positions your company as a thought leader in your category.

We’re also thinking about AI search readiness, ensuring content is structured to surface in AI-generated answers from tools like ChatGPT and Perplexity, not just traditional Google results.

2. Siege Media

Best for: Data-driven content strategies with strong link building and visual content. Companies that want a full-service partner handling everything from ideation to design to promotion.

Not ideal for: Companies looking for thought leadership content or deep industry-specific expertise. Siege excels at scalable SEO content, but their strength is more in systems than in specialized B2B storytelling.

What makes them different: Siege Media has been in the game since 2012 and reports generating over $150 million in annual organic traffic value for clients. They use proprietary tools and frameworks (like their Keyword Opposition to Benefit analysis) to identify content opportunities. Their team includes writers, editors, designers, and SEO specialists—making them a true end-to-end partner. Notable clients include Zapier, Zoom, and Figma.

3. Animalz

Best for: Long-form, educational content that establishes thought leadership. B2B SaaS and tech companies that need to explain complex concepts to professional audiences.

Not ideal for: Companies that need technical SEO work, link-building services, or high-volume content production. Animalz focuses on quality writing, not comprehensive SEO services.

What makes them different: Animalz content tends to be long-form, substantive, and designed to turn readers into informed decision-makers. They’ve worked with companies like Amazon, Google, Airtable, and GoDaddy. Their own blog is widely respected in the content marketing industry for strategic insights. 

4. Grow and Convert

Best for: Conversion-focused content that targets high-intent keywords. Companies that want content connected directly to leads and sign-ups, not just traffic.

Not ideal for: Brand building or top-of-funnel awareness content. Their methodology prioritizes bottom-funnel keywords first, which works well for lead generation but less so for category education.

What makes them different: Grow and Convert developed the “Pain Point SEO” methodology, which focuses on targeting keywords that indicate high purchase intent. They work backwards from conversion goals, prioritizing content that captures ready-to-buy traffic before expanding to broader topics. They also offer link building and technical SEO support. Clients have included Aura, Patreon, and Scribe.

5. Foundation Marketing

Best for: Content distribution and amplification. Companies that have invested in content but struggle to get it in front of the right audiences.

Not ideal for: Companies that need deep technical SEO expertise or want an agency focused purely on organic search. Foundation’s strength is in distribution strategy, not technical optimization.

What makes them different: Foundation takes an end-to-end approach that extends well beyond publishing. They excel at amplifying content through LinkedIn, newsletters, influencer partnerships, and community engagement. CEO Ross Simmonds is a recognized thought leader in content distribution. They also focus on content refreshes and repurposing—getting more value from existing assets. Clients have included Mailchimp, Canva, and Webex.

6. Omniscient Digital

Best for: SaaS companies that need strategic guidance alongside content execution. Teams that want content tied to pipeline and revenue, not just traffic metrics.

Not ideal for: Companies that just need content production without strategic involvement. Omniscient Digital positions itself as a strategic partner, not a content factory.

What makes them different: Founded by former HubSpot content team members, Omniscient Digital uses a proprietary research framework that blends qualitative insights (customer interviews, persona analysis) with quantitative data to craft custom strategies. They focus on building scalable content systems and connecting content to business outcomes. Their approach is consultative—you’re working with senior strategists, not just account managers.

7. Optimist

Best for: Mid-market SaaS companies looking for a structured, strategic approach to content. Product-led growth companies that want content aligned with user acquisition goals.

Not ideal for: Enterprise companies with complex stakeholder needs or those looking for pure thought leadership content. Optimist’s sweet spot is growth-stage SaaS.

What makes them different: Optimist describes themselves as builders of “organic growth engines.” They start with strategy before writing anything, tightly interlocking SEO research, content planning, design, and internal linking structure. They also include design and outreach in their engagements, ensuring content both ranks and earns backlinks. Clients have included Semrush and Submittable.

8. Codeless

Best for: Companies that need high-volume, long-form content production. Post-funding startups or enterprises looking to rapidly scale their content libraries.

Not ideal for: Companies looking for highly specialized or thought leadership content. Codeless optimizes for scale and consistency, which can mean less customization per piece.

What makes them different: Codeless is a content production powerhouse, publishing hundreds of SEO-optimized articles monthly across competitive niches. They combine written content with custom graphics and video when appropriate. Their refined processes allow them to maintain quality at scale—a difficult balance. They also offer content refresh services to keep existing content ranking. Clients have included Reddit, Remote.com, and Motion.

9. Growth Plays

Best for: B2B tech companies that want content tied directly to pipeline and revenue. Companies frustrated by traffic that doesn’t convert.

Not ideal for: Companies focused primarily on brand awareness or top-of-funnel education. Growth Plays is laser-focused on pipeline generation.

What makes them different: Growth Plays integrates analytics and attribution into everything they do. They help clients see exactly which content pieces influence revenue, not just which drive traffic. They’re also forward-thinking about search evolution—optimizing for social visibility and even emerging channels like AI chat answers. They assist with website migrations to ensure SEO continuity. Clients have included Lattice, Calendly, and Merge.

10. Ten Speed

Best for: Companies with existing content that’s underperforming. B2B SaaS teams that want content optimized for their specific ICP, not generic keyword targeting.

Not ideal for: Companies starting from scratch who need to build a content foundation. Ten Speed’s content refresh expertise is best utilized when you have existing assets to optimize.

What makes them different: Ten Speed stands out for their emphasis on content optimization and refreshes. They start with an unusually thorough onboarding process, going deep on your product, audience, and ICP to ensure content truly aligns with your buyers. This reduces the misalignment that often frustrates companies working with agencies. They combine new content creation with systematic updates to existing pieces—often unlocking quick wins from content you’ve already invested in.

The SEO content agency spectrum

“SEO content marketing agency” describes wildly different types of companies. Understanding where each falls on the spectrum helps you evaluate fit.

On one end, you have programmatic SEO: high-volume, template-driven content designed to capture long-tail search traffic at scale. On the other end, you have editorial SEO: fewer pieces, higher quality, designed to rank AND build brand authority with sophisticated buyers. Neither approach is inherently better. What matters is alignment with your goals.

If you’re selling a low-ACV product with a short sales cycle, programmatic content that captures high-volume searches might be exactly what you need. But if you’re selling to buying committees, navigating 6-12 month deal cycles, and competing on thought leadership, you need content that does more than rank; it needs to influence how prospects think about your category.

Questions to ask on discovery calls

Once you’re clear on your needs, here’s what to ask potential agencies:

“How do you approach keyword research?” Listen for whether they prioritize search volume alone or factor in intent, competition, and alignment with your buyer journey. The best agencies will talk about targeting keywords your buyers actually search for—not just keywords that are easy to rank for.

“Who writes the content?” Some agencies use generalist freelancers. Others have in-house writers with domain expertise. For complex B2B topics, writers who understand your industry will produce dramatically better content.

“How do you handle distribution?” Many agencies stop at publishing. The best ones have a plan for amplification—whether that’s link building, social distribution, or helping you repurpose content across channels.

“How do you measure and report on results?” Look for agencies that go beyond traffic and rankings. Do they help you connect content to pipeline? Can they set up attribution? What does their reporting cadence look like?

“How are you thinking about AI search?” With Google AI Overviews, Perplexity, and ChatGPT changing how people find information, forward-thinking agencies are already optimizing for how content surfaces in AI-generated answers. If an agency hasn’t thought about this, they may be behind the curve.

Red flags to watch for

Guaranteed rankings or unrealistic timelines. SEO is competitive and uncertain. Any agency that guarantees specific rankings or promises dramatic results in 4-6 weeks is either inexperienced or overselling.

One-size-fits-all packages. If an agency offers the same “10 blog posts per month” package to every prospect without understanding your specific situation, they’re optimizing for their production efficiency, not your results.

Vague answers about process or team. You should know who’s working on your account and how they approach the work. Evasiveness here often means heavy outsourcing or lack of defined processes.

Their own marketing is weak. Check the agency’s blog. If they claim to be content experts but their own content is thin, outdated, or doesn’t rank, that tells you something.

Making your decision

Choosing an SEO content marketing agency isn’t about finding the “best” one; it’s about finding the right fit for your specific situation. A startup optimizing for user acquisition has different needs than an enterprise company building thought leadership for a complex sales cycle.

Before you reach out to any agency, get clear on what success looks like for you. Is it traffic? Pipeline? Brand positioning? All three? The answer will help you evaluate which agency’s strengths align with your priorities.

If editorial-quality SEO content is your priority—content that ranks AND builds brand authority, supports complex sales, and influences how prospects think about your category—we’d love to talk. If you need programmatic SEO, technical audits, or high-volume content production, one of the other agencies on this list is likely a better fit. Either way, you’re now equipped to ask the right questions and make a smart choice.