Turn ad spend
into revenue.
OpenNexus is a full-service digital advertising agency that handles media planning, media buying, creative production and performance analytics together. You don't need a separate agency for each platform.
An agency that works
to revenue metrics.
OpenNexus is a full-service digital advertising agency whose dedicated teams plan and run search, social, video, commerce and global advertising. We bring accounts and data scattered across platforms under one standard, and move budget in order of performance.
Make every advertising dollar spent come back as measurable revenue and profit.
An advertising company that combines expert judgment with the processing speed of AI.
We are judged on the numbers that stay on the advertiser's P&L, not on metrics that merely look good.
Why advertisers
choose OpenNexus.
One full-funnel team
Strategy, media, creative, data and engineering people sit in one organization. None of the data silos and accountability gaps that come with splitting agencies by platform.
Our own AI platform, NexaAI
We eliminated the hours spent manually copying platform reports. NexaAI handles real-time monitoring, automated reports and creative generation; strategy and decisions stay with the team.
Business KPIs as the standard
Platform metrics such as CTR and impressions are used for diagnosis. Goals and reporting are set on metrics that appear on the advertiser's income statement: revenue, profit and LTV.
Global operations in 5 languages
We plan and run campaigns in-house in Korean, English, Japanese, Chinese and German. Overseas expansion and Korea market entry campaigns are managed within the same team structure.
Choose only
the services you need.
Search Advertising
Search AdvertisingSearch performance built on purchase-intent keywords
Display Advertising
Display & ProgrammaticAudience-based programmatic buying
Social Advertising
Social AdvertisingPerformance and branding on Meta, TikTok and X
Video · CTV Advertising
Video & CTVVideo campaigns on YouTube, OTT and CTV
App Marketing
App MarketingApp growth measured on post-install LTV
Commerce Advertising
Commerce & Retail MediaSales growth on Coupang, NAVER and Amazon
Global Advertising
Global Marketing5 languages, going overseas and entering Korea
Brand Campaigns
Brand & IMCIntegrated campaigns from strategy to launch
Ad Creative
AI Creative StudioCreative production driven by performance data
Performance Analytics
Data & AnalyticsMeasurement design, attribution, MMM
AI Ad Solutions
AI Solutions · NexaAIOur own AI marketing platform
Hand us search ads alone or your entire digital program. Whatever the scope, KPI definitions and reporting standards stay the same.
opennexus.ai/en/services6-stage operating process
Audit
We audit your ad accounts, analytics tools, competitor activity and search demand, and quantify wasted budget and missed opportunities.
Define goals
Starting from your P&L structure, we set the primary KPI and supporting KPIs per platform. What counts as success is agreed before work begins.
Strategy
Targeting, messaging, media mix, budget allocation, creative direction and test plan, consolidated into a single media plan.
Launch
We set up tagging and CAPI, clean up the account structure, then launch campaigns and creative together. The first 72 hours after launch are an intensive monitoring window.
Optimize
NexaAI flags anomalies in real time, and the dedicated team adjusts bids, budgets, targeting and creative every day. We run at least one test per week.
Scale
We extend proven approaches to new platforms, products and countries, and test the next expansion channel before efficiency starts to decline.
Our own platform,
NexaAI.
NexaAI is the AI marketing platform OpenNexus built and uses on live campaigns. It handles repetitive work such as data collection, reporting and creative variants, so the team can spend its time on bidding, budget and strategy decisions.
Live Analyze
Real-time performance monitoring. Tracks KPIs across all platforms and flags anomalies with recommended actions.
Visualize
Automated reporting. Turns tables and metrics into reports with charts and commentary.
Graphic
AI creative generation. Quickly produces drafts and variants that follow your brand guidelines.
Deep Search
Knowledge search. Semantic search across documents, data and knowledge bases, with answers that cite sources.
5 languages,
local media run in-house.
Search
NAVER Search Ads · NAVER Shopping Search · Google Search · Kakao Keyword Ads · Microsoft Advertising
Social
Meta (Facebook · Instagram) · TikTok · X · LINE · Pinterest
Video · CTV
YouTube · Google DV360 · NAVER Video · Kakao Video · TikTok TopView
Display · Programmatic
Google Display Network · NAVER Performance Display · Kakao Moment · The Trade Desk · Criteo
Commerce · Retail Media
Coupang Ads · NAVER Shopping · 11st · Amazon Ads · Rakuten
App · Measurement
AppsFlyer · Adjust · Airbridge · Singular · Google Analytics 4
Specialist units,
a dedicated team per client.
Strategy & Planning
Market and customer analysis, communications strategy, integrated media planning
Performance Media
Search, display, social, video and app media management and optimization
Commerce
Retail media management, marketplace onboarding, product and promotion consulting
Global
Overseas expansion and Korea entry campaigns, multilingual localization
Creative
Campaign ideas, video and design, AI creative production
Data Science
Measurement design, attribution and MMM analysis, incrementality testing
AI Tech
NexaAI development, platform API integration, operations automation tools
Client Success
Onboarding, regular reviews, contract and billing management
We start by auditing
your current account.
Tell us your goal, monthly budget and timeline. Within 2 business days, the strategy team assigned to you will send an account audit and a first proposal.
- Web
- opennexus.ai/en/contact
- Company
- OpenNexus Inc. · CEO 신승재 · Business Registration No. 810-86-03373
- Address
- #703, 9F, Yeonghyo Bldg., 5-6, Sangmujungang-ro 78beon-gil, Seo-gu, Gwangju, Republic of Korea
