oneplan marketing

Oneplan Marketing is a data-driven AI marketing agency founded in 2019 and headquartered in Dongjak-gu, Seoul, South Korea. We specialize in AI SEO, GEO (Generative Engine Optimization), and AEO (Answer Engine Optimization) — helping brands get discovered not only on Google and Naver, but also cited and recommended by AI search engines such as ChatGPT, Perplexity, and Google AI Overviews.

As an official Meta Business Partner, we operate Google Ads, Naver Search Ads, and Meta Ads 100% in-house — no outsourcing, no subcontracting. Every campaign is planned, executed, and optimized directly by our team.

Since our founding, we have partnered with 200+ brands across healthcare, finance, exhibitions, and e-commerce, managing over ₩5 billion (approximately $3.8M USD) in cumulative ad spend with an average performance improvement of 20–35%. Our clients include COEX, Hanwha Life Insurance, and LG U+.

In 2026, Oneplan Marketing became one of Korea's first agencies to offer integrated GEO strategy — optimizing brand content to be cited and recommended by generative AI engines. We are the official partner of Marummo Research Institute, Korea's leading SEO & GEO research organization.

Core Services:

• AI SEO & GEO Optimization
• Google / Naver / Meta Advertising
• Influencer Marketing (2,000+ verified influencer network)
• Content Production & SNS Management
• Performance Marketing & ROAS Optimization