A search engine optimization company is an agency or platform that optimizes websites for organic visibility in Google and, increasingly, in AI answers from ChatGPT, Gemini, and Perplexity. It combines technical fixes, content strategy, and authority building into an ongoing trajectory.
This guide is for founders, growth leads, and marketing managers who are growing internationally and looking for a partner that delivers native content per market without the brand losing its voice.
After reading this, you will know what such an agency does, what it costs, what to look out for when choosing, and why SEO alone is no longer enough to stay visible.
Key takeaways
- One-off audits or technical migrations typically start around €1,000 to €2,500, while ongoing optimization runs via 6- or 12-month contracts or monthly cancellable subscriptions, as described by marketingcollega.nl.
- Standard monthly retainers range between €500 and €5,000 for SMBs, and run up to €7,500–€10,000+ per month for enterprise clients in competitive sectors, according to goonline.nl.
- Dutch SEO specialists charge between €75 and €200 per hour, and specialized agencies even €110 to €265 per hour.
- Agencies work systematically on three pillars: technical SEO, content, and authority — wux.nl calls these the three SEO pillars.
- More and more agencies are adding Generative Engine Optimization (GEO) to their services to keep clients visible in Google AI Overviews, ChatGPT, Gemini, and Perplexity.
What exactly does a search engine optimization company do?
A search engine optimization company increases a website's findability in search engines by fixing technical issues, writing content around search intent, and building authority through links and mentions. The work touches three areas simultaneously: the technology under the hood, the content people read, and the trust that other sites and sources give to your domain.
Technical SEO is about crawlability, indexing, Core Web Vitals, and structured data. Content revolves around keyword intent, topic clusters, and usable, human-centric texts. Authority comes from link building, PR, and citations — wux.nl and economy.nl describe these as the three core pillars of any serious SEO trajectory.
The difference from SEA (Google Ads) is simple: SEO builds sustainable, organic visibility without cost-per-click, while SEA delivers immediate paid placements that stop the moment the budget stops. Companies wanting long-term growth usually combine both, but build their foundation on organic growth.
Those who want to dive deeper into the tech behind this work will find a step-by-step explanation in our practical guide for SEO optimization.
What does a search engine optimization company cost in 2026?
The costs of a search engine optimization company vary greatly by model: one-off projects start around €1,000, and ongoing retainers run up to well over €10,000 per month for large, competitive markets. Which model fits depends on your goal: a quick technical fix or lasting growth in multiple countries.
The market roughly knows two pricing structures. One-off audits and migrations are project-based and finite. Ongoing optimization works via 6 to 12-month contracts or via monthly cancellable subscriptions offering more flexibility.
| Model | Price Range | Suitable For |
|---|---|---|
| One-off audit / migration | €1,000 – €2,500 | Technical quick scan, one-off fix |
| Monthly retainer (SMB) | €500 – €5,000 | Ongoing growth, small to medium sites |
| Monthly retainer (competitive/enterprise) | €7,500 – €10,000+ | Multiple markets, heavy competition |
| Specialist hourly rate | €75 – €200 | Separate projects, advice |
| Premium agency hourly rate | €110 – €265 | Strategy, senior expertise |
These figures come from current market data by goonline.nl and marketingcollega.nl. Note: a low price often means fewer hours per month, not necessarily lower quality — but with structurally low rates, it is smart to ask how much time is actually spent on your site.
How do you choose the right SEO agency for your market?
You choose the right search engine optimization company by testing for transparency, language proficiency per market, and measurable results instead of vague promises. Always ask for concrete examples from the same sector or language region before signing.
Pay attention to these points before signing a contract:
- Native content per language: have the agency demonstrate how it writes local content, not just translates it. A literally translated text often sounds stiff and misses local keywords.
- Reporting format: ask for ranking data, traffic, and conversions, not just a list of keywords that have "gone up".
- Contract form: a monthly cancellable contract gives you more certainty than a year contract without an exit clause.
- Tool stack: established agencies work with Google Search Console, GA4, Screaming Frog, Semrush or Ahrefs, and PageSpeed Insights — feel free to ask which tools they use and why.
- GEO knowledge: explicitly ask if they also measure how often your brand is mentioned in ChatGPT, Gemini, or Perplexity, not just in Google.
An agency that answers these questions without hesitation likely has a mature process. An agency that remains vague about reporting or "guarantees" results within two weeks deserves distrust — organic growth takes time.
SEO vs GEO: why traditional optimization is no longer enough
SEO optimizes for classic search results, while GEO (Generative Engine Optimization) optimizes for the answers given by AI systems like ChatGPT, Gemini, and Perplexity. Both revolve around visibility, but the metrics differ completely: ranking positions versus citations in a generated answer.
More and more agencies are adding GEO to their standard SEO service to keep clients visible in AI Overviews and chatbots alongside classic SERPs, as evidenced by multiple Dutch agency sites. That is no hype: people are increasingly asking their research questions directly to an AI assistant instead of scrolling through ten blue links.
The problem: most agencies still measure GEO with vague, inflated vanity scores rather than verifiable citation tracking. A good approach shows concretely which sources an AI model cites, in what language, and how often your brand appears in them — no theater, but measurable data.
Want to understand precisely how GEO works in practice alongside classic SEO? Read our practical guide for AI positioning for the complete approach.
What steps does an SEO project go through in practice?
A professional SEO trajectory usually follows four fixed phases: audit, keyword and content mapping, technical execution, and authority building. Each phase builds upon the previous one and delivers measurable intermediate results.
- Audit & strategy: intake meeting, technical crawl, competitor analysis, and a baseline measurement of current rankings and traffic.
- Keyword and content mapping: linking commercial and informational search terms to landing pages, pillar pages, and FAQ clusters.
- On-page & technical execution: fixing 404s and redirect chains, improving Core Web Vitals, adding JSON-LD schema, and optimizing H1s/metadata.
- Authority & off-page: building authoritative links via guest articles, partner networks, digital PR, and local citations.
- Measuring & adjusting: monthly reporting on rankings, traffic, and conversions, with adjustments to the content calendar where necessary.
This division into phases is found at multiple Dutch agencies, including yourfellow.nl and searchflow.nl. The difference lies mainly in speed and scale: an agency that works manually needs weeks per market; an automated platform can plan and publish multiple languages simultaneously.
DIY or outsourcing: what fits your company?
DIY works if you serve a single market and have time to learn content, tech, and link building yourself. Outsourcing works better as soon as you serve multiple countries or languages, or as soon as your team lacks time to maintain weekly audits and content.
The trade-off is often simple:
- Single language, small team, limited budget → DIY with basic tools like Google Search Console and a content calendar can work fine.
- Multiple markets, little local writing power → outsourcing to an agency or platform that delivers native content per language is faster and safer than machine translation that damages your brand voice.
- Rapid growth, need for visibility in both Google and AI answers → an automated platform combining SEO and GEO saves you from retaining separate copywriters per country.
Companies growing internationally often run into the same problem: cheap translation yields stiff, unnatural texts that search engines and readers see through. Native, per-market written content performs structurally better precisely because it hits local search intent and tone.
Frequently asked questions
What is the difference between an SEO agency and a SEA agency?
An SEO agency builds sustainable, organic visibility without cost-per-click, whereas a SEA agency (Google Ads) manages paid ads that stop the moment the budget runs out. SEO takes more time to see results, but the visibility persists without ongoing ad spend.
How long does it take for SEO to yield results?
Most agencies count on three to six months before noticeable ranking improvements appear, and six to twelve months for stable, competitive positions. This explains why many contracts are structured around periods of 6 or 12 months rather than one-off projects.
What does outsourcing SEO cost on average per month?
An average SMB pays between €500 and €5,000 per month for an ongoing SEO trajectory, while enterprise clients in competitive sectors often pay €7,500 to €10,000 or more. One-off audits or migrations typically range between €1,000 and €2,500.
Can a search engine optimization company also provide visibility in ChatGPT and Gemini?
Yes, provided the agency or platform actively integrates GEO (Generative Engine Optimization) alongside classic SEO. This means it not only measures ranking positions but also tracks how often and in what context your brand is mentioned in answers from ChatGPT, Gemini, and Perplexity.
Do I need to hire a separate SEO agency for each country?
That is not necessary, provided your partner can deliver native content per language instead of machine translation. A single platform writing, publishing, and tracking multiple markets natively saves you coordination between separate local agencies per country.
Next step: choose a partner that grows with your markets
You do not need to hire a separate agency or copywriter for every country to score well anywhere in the world. UPGeoSEO learns your brand's voice, writes native content per language, publishes directly to your CMS, and tracks whether ChatGPT, Gemini, and Perplexity actually cite your brand — no translated fluff, no inflated vanity scores.
Want to see what that looks like in practice for your markets? Start with our guide to AI positioning in 2026 and discover how to track both classic rankings and AI citations in a single workflow.
