SEO & SEA - Online Marketing Solutions

What SEO & SEA - Online Marketing Solutions does

SEO & SEA - Online Marketing Solutions is a privately held, founder-led Dutch digital marketing agency founded in 2016 by Chelsey Hendriks and headquartered in Alphen aan den Rijn, Zuid-Holland. The firm delivers full-service online marketing to primarily SMB clients in the Zuid-Holland region (Alphen aan den Rijn, Leiden, Nieuwkoop, Boskoop, Bodegraven), with selective international engagements through clients such as Cryonorm (B2B/industrial) and Lastafelshop (ecommerce in Belgium, Germany, France, and Austria). Across nine years the agency reports having served 320+ clients, operating with a compact team of nine specialists covering SEO, paid search, social advertising, content, copywriting, linkbuilding, and project management.

The agency's core product portfolio is organized into three service lines: online advertising (Google Ads, Shopping Ads, Social Media Ads, Server Side Tracking), search engine optimization (SEO strategy, technical SEO, copywriting, linkbuilding, local SEO, Generative Engine Optimization for AI answer engines), and website/webshop development (WordPress websites, WooCommerce webshops, custom applications, conversion rate optimization). The technology stack is built around WordPress/WooCommerce for client builds, Google Ads and Meta Ads for paid media, Google Analytics 4 with server-side data collection for measurement, and emerging AI platforms (ChatGPT, Perplexity, Claude, Gemini) for the GEO service. The firm holds Google Partner and Leadinfo Silver Partner certifications and operates as a WordPress-specialized agency.

Commercially, SEO & SEA runs a consultative, sales-led go-to-market: free initial consultations scheduled through Calendly, phone, or email, followed by custom proposals and ongoing monthly retainers. Pricing is quote-based with no publicly disclosed tiers. Customer acquisition is driven by the agency's own organic search visibility for regional marketing terms, a published library of case studies (succesverhalen), blog content, and word-of-mouth referrals. Revenue mechanics follow a professional services retainer model with project-based engagements layered on top, targeting SMBs as the primary segment and selectively extending to mid-market and B2B/industrial clients. The business is bootstrapped, with no external funding, no subsidiaries, and no disclosed holding-company structure.

Name

SEO & SEA - Online Marketing Solutions

Legal name

SEO & SEA

Website

https://seoseamarketing.nl

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

SEO & SEA is a privately held, founder-led Dutch digital marketing agency in Alphen aan den Rijn delivering SEO, SEA, website/webshop development, and emerging AI-search services (GEO) primarily to SMB and mid-market clients across Zuid-Holland with selective international engagements.

Ownership category

akta.pro rank

Product category

Digital Marketing Services

NAICS

Media Buying Agencies (54183), Media Buying Agencies (541830)

SIC

Services-Advertising Agencies (7311)

akta.pro industry

PRIMARYMPAAACAA

Search Engine Optimization (SEO) Services

Media, Entertainment & Sports/Advertising, Marketing & PR Services/Digital & Performance Marketing (SEO/SEM, Paid Social, Affiliate)

SECONDARYBPAFAJAH

SEO Content Strategy & Production (Topic Research, Editorial Planning)

Business & Public Services/Marketing, Advertising & PR Services/Search Engine Optimization (SEO) Services

SECONDARYBPAFAJAI

SEO Analytics, Reporting & Attribution (KPIs, Dashboards, Forecasting)

Business & Public Services/Marketing, Advertising & PR Services/Search Engine Optimization (SEO) Services

SECONDARYBPAFAJAE

E-commerce SEO (Category/Product SEO, Merchant Feeds)

Business & Public Services/Marketing, Advertising & PR Services/Search Engine Optimization (SEO) Services

Keywords

• Search engine optimization
• Search engine advertising
• Wordpress web development
• Conversion rate optimization
• Digital marketing services

Headquarters

HQ city

Alphen Aan Den Rijn

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Online Marketing Agency Services: The company generates revenue through providing integrated online marketing services including SEO (Search Engine Optimization), SEA (Search Engine Advertising via Google Ads, Shopping Ads, Social Media Ads), website and webshop development using WordPress/WooCommerce, copywriting, linkbuilding, local SEO, conversion rate optimization, and server-side tracking implementation. Services are delivered through a consulting model with a dedicated account manager, ongoing monthly retainer arrangements, and project-based engagements.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

SEO & SEA is a Dutch online marketing bureau that sells integrated digital marketing services to businesses, principally Search Engine Optimization (SEO) and Search Engine Advertising (SEA) via Google Ads, Shopping Ads, and social media advertising, alongside WordPress and WooCommerce website and webshop development. Service delivery follows a structured methodology of Deep Customer Analysis, 0-meting baseline measurement and integration, and continuous optimization, with each client assigned a dedicated marketeer as single point of contact. The portfolio is rounded out by copywriting, linkbuilding, local SEO, conversion rate optimization (CRO), Server Side Tracking, Generative Engine Optimization (GEO), and AI Advertising.

Product overview

SEO & SEA Online Marketing Solutions is a full-service online marketing bureau offering a comprehensive portfolio of digital marketing services. The core offering combines SEO (Zoekmachine Optimalisatie) and SEA (Google Ads/Online Adverteren) services, supported by website and webshop development capabilities using WordPress and WooCommerce platforms. The service portfolio spans organic search optimization, paid advertising across Google and social media platforms, local SEO, Generative Engine Optimization (GEO) for AI search engines, Server Side Tracking for data quality, content creation through copywriting, linkbuilding, conversion optimization (CRO), and custom web applications. Social media advertising includes Facebook, Instagram, LinkedIn, and Pinterest advertising. The agency has expanded into AI Advertising services leveraging machine learning for campaign optimization.

Differentiator

Problem solved

Functional benefit

Products and services

• Zoekmachine Optimalisatie (SEO) Search Engine Optimization service to rank client websites higher organically in Google, including strategy, technical SEO, copywriting, and linkbuilding. Targeted at businesses seeking organic visibility and lead generation.
• Google Ads (SEA) Search Engine Advertising service using Google Ads, covering Google Search, Google Display, and Google Performance Max campaigns for businesses seeking immediate paid visibility and lead generation.
• Shopping Ads Product advertising service on Google Shopping, Facebook Shops, and Amazon featuring product photos, names, and prices, designed for e-commerce and retail clients seeking direct product-level visibility.
• Social Media Advertising Advertising campaigns on Facebook, Instagram, LinkedIn, and Pinterest with detailed targeting options, aimed at businesses seeking paid social visibility and audience-driven acquisition.
• Copywriting SEO copywriting service creating relevant content for website visitors, including website texts, SEO texts, and blog articles, supporting client SEO and content marketing goals.
• Linkbuilding Service that builds external links to improve website authority and Google rankings through quality and relevant backlinks, supporting client SEO outcomes.
• Lokale Vindbaarheid (Local SEO) Local SEO service helping local businesses be found by customers in their region, including Google My Business optimization and locally targeted content, primarily for SMBs in Zuid-Holland.
• Generative Engine Optimization (GEO) Optimization service for AI search engines and answer engines such as ChatGPT, Perplexity, Claude, and Google Gemini, focused on content that answers questions directly, semantic SEO, E-E-A-T authority signals, structured data (Schema Markup), and citation optimization.
• Server Side Tracking Server-side data collection method that processes website visitor data through a dedicated server before forwarding it to Google Analytics 4, Google Ads, and Meta Ads, providing better data quality, AVG/GDPR compliance, longer first-party cookie lifespan, and more reliable conversion measurement.
• WordPress Website Development Custom WordPress website development service using the WordPress CMS platform, producing professional, SEO-optimized websites for businesses needing a new or refreshed web presence.
• Webshop (WooCommerce) Development Custom webshop development service using WooCommerce integrated with WordPress, providing SEO-optimized, self-manageable online retail solutions for businesses seeking to start or grow e-commerce operations.
• Maatwerk Applicaties (Custom Applications) Custom application development service for specific business requirements that cannot be achieved with standard WordPress or WooCommerce plugins, delivering bespoke web functionality for client needs.
• Conversie Optimalisatie (CRO) Conversion Rate Optimization service to improve website performance, user experience, and increase desired actions such as purchases or form submissions for client websites and webshops.
• AI Advertising AI-powered advertising service that uses artificial intelligence to automatically optimize ad campaigns based on user behavior, interests, and intent through Google Ads and Meta Ads platforms.
• ChatGPT Ads Emerging advertising service for AI platforms such as ChatGPT, preparing clients for future ad placement within AI-generated answers and answer-engine inventory.

Quantifiable outcome

• Gromax achieved #1 ranking for 'grondverzetmachines' and 'hoogwerker Alphen aan den Rijn' in Google
• +5 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

AI capability2 records

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• GooglecoreTechnology or IntegrationSEO & SEA is a Google Partner, certified by Google for proficiency in Google Ads and online advertising. The partnership enables the agency to manage Google Ads campaigns, access Google tools and resources, and demonstrate certified expertise in search engine advertising to prospective clients.
• WordPresscoreTechnology or IntegrationSEO & SEA is a WordPress partner specializing in WordPress website and WooCommerce webshop development. The agency builds custom websites and e-commerce solutions using the WordPress/WooCommerce platform, positioning itself as a WordPress-specialized agency.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Trust Online: Dutch digital agency focused on SEO, SEA, and conversion optimization for SMB clients. Comparable service mix and Dutch market focus to SEO & SEA.
• Traffic Builders: Dutch agency specializing in SEO, SEA, and content marketing for B2B and B2C clients. Direct competitor in the Dutch SMB online marketing bureau space.
• Adwise Online Marketing: Dutch full-service digital marketing agency offering SEO, SEA, and performance marketing for SMB and mid-market clients. Closely comparable in service mix and target customer segment to SEO & SEA.
• Pepper Internet: Dutch online marketing bureau providing SEO, SEA, and web development for SMB clients. Directly comparable to SEO & SEA in service portfolio and customer segment.
• Seeders: Dutch agency specialized in SEO, linkbuilding, and content marketing for SMB clients. Comparable to SEO & SEA's organic search offering and similar Dutch regional focus.
• OrangeValley: Performance marketing agency in the Netherlands focused on SEO, SEA, and data-driven marketing. Comparable to SEO & SEA in client size, channel mix, and Dutch SMB focus.
• Your Agency: Dutch online marketing bureau offering SEO, Google Ads, and web design services to SMBs. Comparable to SEO & SEA's service stack and regional SMB target market.
• Cleverly (formerly HMC): Dutch performance marketing agency offering SEO, SEA, and social advertising. Directly comparable in channel mix and Dutch SMB-to-mid-market client base.

Broad incumbents

• Dept Agency: Large international digital agency with Dutch roots offering SEO, paid media, and full-funnel digital services. Overlaps with SEO & SEA on service capabilities but serves enterprise-scale clients.

Emerging players

• Bright Alley: Dutch digital agency with SEO and data-driven marketing capabilities. Comparable in offering but positioned more toward analytics and martech than pure SMB marketing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/SEOenSEA
• LinkedInlinkedin.com/company/seo-&-sea
• Instagraminstagram.com/seo_en_sea

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SEO & SEA - Online Marketing Solutions