
Cybersecurity marketing agency doing content strategy and creation for security vendors, with SEO and AI search optimisation alongside it.
- 4 case studies
- 3 accreditations
- Clients: IBM, PCA Cyber Security
Agencies Offering Source-of-Truth Content
Source-of-truth content is written to be cited by a model as well as read by a person. It carries clear claims, consistent facts, and structure a model can pull from directly. These agencies build it.
Most content on the web is written for a reader who arrives with context. A model pulling facts to answer a prompt has none of that context, so it needs a clear, self-contained claim it can quote or paraphrase with confidence. Source-of-truth content is written with that in mind, usually alongside entity and schema work so the same facts are marked up in a way a model can parse, not just written in prose.
This shows up in practice as rewritten product pages, dedicated FAQ and comparison content, and documentation restructured so a single page answers a single question clearly. The agencies below build this kind of content as part of their GEO work, alongside the other services shown on each profile.

Cybersecurity marketing agency doing content strategy and creation for security vendors, with SEO and AI search optimisation alongside it.
B2B GEO and AEO agency focused on entity mapping, AI content optimisation, and structured data for software brands.

B2B GEO and AEO agency for SaaS and fintech, covering schema, citation engineering, and content structure for AI answers.

Portland B2B SEO agency with a dedicated generative engine optimization service aimed at organic pipeline.
UK healthcare and pharma marketing agency offering generative engine optimization for pharmaceutical and healthcare brands.

Healthcare communications agency, part of Burson/WPP, offering a dedicated GEO product called GEOrge for pharma and healthcare brands.

Independent SEO and AI-visibility consultant, working solo since 2009 with marketers and organisations on search and generative-search strategy.
Fintech and financial services marketing agency offering AI/SEO discovery optimization alongside branding and content.

B2B SaaS and fintech marketing agency offering generative engine optimization alongside technical SEO and content.

SEO and GEO agency for fintech and B2B SaaS startups, running fintech-specific AI visibility audits and compliance-aware content.

Healthcare marketing agency offering GEO for medical and dental practices, including plastic surgery and dental-specific services.

Minneapolis digital agency offering Generative Engine Optimization alongside development and performance marketing for B2B, B2C, and ecommerce.
London ecommerce agency doing Generative Engine Optimization for Shopify and DTC brands.
Athens content and SEO agency specialising in B2B SaaS, with AEO and GEO aimed at AI Overviews and answer boxes.

Content marketing agency working only with financial services and fintech companies, covering SEO and GEO.
London agency offering generative engine optimization for ecommerce, fashion, travel, and consumer brands, alongside enterprise clients.

New York agency combining SEO, GEO, and Reddit engagement for DTC beauty and ecommerce brands, alongside B2B SaaS clients.
Massachusetts agency offering generative engine optimization across B2B and B2C categories, including ecommerce and consumer-facing businesses.

London GEO agency offering a dedicated AI Search & GEO service for B2B, enterprise, and tech brands.
Normal content marketing is written to engage a reader over several paragraphs. Source-of-truth content is written so a specific fact or claim can be lifted cleanly by a model, which usually means shorter, more direct, and more structured than a typical blog post.
Not usually. Most agencies treat it as an addition. Existing SEO content stays for human readers and rankings, while source-of-truth pages are added or rewritten for how models retrieve facts.
Agencies in the directory whose own site names this kind of content work as a service.
Get listed free, then claim your profile to add pricing, team size, and engines covered.
Add your agency