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Integrated Digital Advertising Agency

Turn ad spend
into revenue.

Search adsSocial adsVideo · CTV adsShopping · commerce adsApp marketingGlobal advertising , run end to end by a dedicated team, from strategy to performance reports.

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.

  • Search, social, video, commerce and app ads run as one
  • 40+ domestic and global ad platforms run directly
  • Global campaigns in 5 languages
  • Proprietary AI platform NexaAI

Sample ad creative · fictional brand

NAVERGoogleYouTubeMetaInstagramKakaoTikTokCoupangAmazon AdsLINEYahoo! JAPANXPinterestLinkedInCriteoThe Trade DeskApple Search AdsBaiduMicrosoft AdsRakuten
Who we are

The numbers OpenNexus manages to are revenue, profit and LTV. Impressions and clicks are tracked as intermediate metrics on the way there. Goal setting, budget allocation and creative decisions are all judged against the same standard.

About OpenNexus
01

Strategy

We set targeting, messaging and media mix from market, competitor and customer data.

02

Media

We run 40+ domestic and global platforms directly and reallocate budget by performance.

03

Creative

We plan creative for each placement and use generative AI to produce variants quickly for testing.

04

Data & AI

Our own platform, NexaAI, collects performance across all platforms in real time and flags anomalies immediately.

By the numbers

OpenNexus in numbers.

Our operating scope and our commitments to advertisers, in numbers. Campaign performance figures stay confidential and are shared only in meetings.

11
Advertising services
40+
Ad platforms we run directly
5
Campaign languages
8
Specialist industries
24/7
Real-time performance monitoring by NexaAI
2 business days
From inquiry to first proposal
What we do

Advertising services

Hand us search ads alone or your entire digital program. Whatever the scope, KPI definitions and reporting standards stay the same.

  1. 01 Search AdvertisingSearch Advertising Search performance built on purchase-intent keywordsNAVER Search AdsNAVER Shopping SearchNAVER Brand SearchGoogle Search
  2. 02 Display AdvertisingDisplay & Programmatic Audience-based programmatic buyingGoogle Display NetworkGoogle DV360The Trade DeskNAVER Performance Display
  3. 03 Social AdvertisingSocial Advertising Performance and branding on Meta, TikTok and XFacebookInstagramThreadsTikTok
  4. 04 Video · CTV AdvertisingVideo & CTV Video campaigns on YouTube, OTT and CTVYouTubeYouTube ShortsGoogle DV360NAVER Video
  5. 05 App MarketingApp Marketing App growth measured on post-install LTVGoogle App CampaignsApple Search AdsMetaTikTok
  6. 06 Commerce AdvertisingCommerce & Retail Media Sales growth on Coupang, NAVER and AmazonCoupang AdsNAVER Shopping · Smart Store11stGmarket · Auction
  7. 07 Global AdvertisingGlobal Marketing 5 languages, going overseas and entering KoreaGoogleMetaTikTokYouTube
  8. 08 Brand CampaignsBrand & IMC Integrated campaigns from strategy to launchTV · CTVYouTubeNAVER Branding DAKakao Bizboard
  9. 09 Ad CreativeAI Creative Studio Creative production driven by performance dataDisplay bannersSocial feed · carouselVertical short-formIn-stream video
  10. 10 Performance AnalyticsData & Analytics Measurement design, attribution, MMMGoogle Analytics 4Google Tag ManagerBigQueryLooker Studio
  11. 11 AI Ad SolutionsAI Solutions · NexaAI Our own AI marketing platformGoogle AdsMetaNAVERKakao
View all advertising services
Proprietary AI Platform

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 collection across all platforms, with anomaly alerts
  • KPI-focused daily report delivered every morning
  • AI creative generation and variants based on your brand guidelines
  • Deep Search: finds campaign history and industry sources, with citations
More about NexaAI
NexaAI · Live Analyze
ROAS642%▲ 18.4%
CPA₩8,420▼ 12.1%
CVR4.82%▲ 0.6%p
Mobile shopping search CVR is 31% above average between 2 and 5 p.m. Consider raising bids by 15% for that window.

Sample screen

Industries

Every industry
has its own KPIs.

Beauty

Beauty · Fashion

Product launches and seasonal promotions, with influencer content tied to commerce sales.

Commerce

E-commerce · Retail

Marketplace listings, retail media and D2C site conversion, all managed against GMV.

Finance

Finance · Fintech

Creative that meets financial ad compliance review, and optimized app sign-up and account-opening funnels.

Gaming

Gaming · Entertainment

Pre-registration, global UA, LTV-based bidding and high-volume video creative.

Education

Education · EdTech

Coverage of seasonal search demand and quality management of consultation leads.

Food

F&B · Consumer goods

Integrated campaigns measured on both mass reach and retail sales.

Tech

IT · B2B SaaS

Lead scoring and ABM campaigns built for long purchase cycles.

Public

Public sector · Brand

Policy communication, corporate branding and large-scale awareness campaigns.

How we work

From audit to scale,
in 5 stages.

More on how we work
01 Diagnose

Audit

We audit your accounts, data and competitor activity, and quantify the room for improvement.

02 Design

Strategy

We lock in KPIs, budget allocation, media mix and creative direction.

03 Launch

Launch

With measurement in place, campaigns and creative go live together.

04 Optimize

Optimize

Using NexaAI monitoring, the dedicated team adjusts bids, budgets and creative every day.

05 Scale

Scale

We extend what has been proven to new platforms, markets and audiences.

Global

5 languages,
local media run in-house.

We take Korean brands overseas and bring global brands into Korea. Campaigns are planned in the local language and run on local media, and country-level performance is compared in a single dashboard.

View global marketing
KOSouth Korea
ENNorth America · English-speaking
JAJapan
ZHGreater China
DEGermany · DACH

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.

Ask Nexa, our chat assistant