AI Marketing · Web/App Development · GEO/AEO Optimization · Data Analytics — Gangnam, Seoul

Ads, websites, even AI search —One Team does it all

The Gangnam marketing agency trusted by Musinsa, SK, LG, and TMF Group. Stop managing marketing agencies, developers, and analytics firms separately.
Zero cost until demo approval, see the results and decide.

150+
Projects
98%
Satisfaction
0원
Demo Cost

Trusted by 150+ companies

MusinsaEVSISTMF GroupSKLGCreatipRakutenLotte Hotel
MusinsaEVSISTMF GroupSKLGCreatipRakutenLotte Hotel

SERVICES

All Solutions for Business Growth

Development

Development

01

3D interactive websites, scroll animations, AI solutions, and app development with cutting-edge technology

3D WebsiteScroll AnimationAI
$0
Marketing

Marketing

02

Systematic growth support through Naver, Google, Meta ad operations and GA4 data analysis

Ad OperationsData AnalysisGrowth Strategy
30%+
Consulting

Consulting

03

Strategy development and KPI setting aligned with your business goals

StrategyKPI1:1 Manager
1:1
Automation

Automation

04

Automate repetitive tasks and maximize efficiency through system integration

WorkflowRPAIntegration
50%+
Integration

Integration

05

One-stop marketing-development-analysis with a dedicated PM managing your project

One-StopUnifiedDedicated PM
All-in-One

Technology meets creativity

All Solutions for Business Growth

From marketing to development, data-driven integrated solutions

SUCCESS STORIES

Real results, proven by data

23% lift in checkout conversion
E-commerce

23% lift in checkout conversion

Redesigned the checkout system for Gachepay's gift card mall

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40% improvement in ROAS
Ad Operations

40% improvement in ROAS

Built a unified dashboard across 5 ad platforms

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70% less time on operations
Booking Automation

70% less time on operations

Real-time integration with 3 OTA booking channels

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GEO · AEO · AI SEARCH

Brands ChatGPT cites — EnterNext makes them

ChatGPT, Perplexity, Google AI Overview, Naver Cue. By 2026, 25% of search traffic shifts to AI answers. It's no longer a click war — it's a citation war.

GEO

Generative Engine Optimization

We engineer content structure, E-E-A-T signals, and FAQ schema so ChatGPT and Perplexity cite your brand in their answers.

+2.5×
Search index growth (2025→2026)
AEO

Answer Engine Optimization

Question-answer pairs, concise direct sentences, and structured data — content packages that AI can quote verbatim.

25%
Traffic loss defended in the zero-click era
AI ADS

Generative AI Advertising

ChatGPT copy, Midjourney imagery, Sora and Runway video — all auto-generated on-brand. Galaxy S25-style production workflow.

Stable ROAS as ad budgets double

One of the first agencies in Korea to formalize GEO/AEO consulting. Backed by content-structure expertise from work with Musinsa, SK, and LG.

Get a Free GEO/AEO Audit

VIDEO PRODUCTION

Make Your Brand Stronger with Video

Short-form, brand films, product videos - all in one stop

Video production

Make Your Brand Stronger with Video

YouTubeReelsTikTokShorts4K

PROCESS

See the Demo, Then Decide

No more "This isn't what I wanted..."
See the actual screen, and start only when satisfied.

01

Requirements Analysis

Free

Understand business goals

02

Demo Creation

Free

Preview actual screens

03

Feedback Integration

Free

Unlimited revisions

04

Development Start

Begin after approval

Free Demo Consultation
Requirements Analysis

FOR STARTUPS

Not sure where to start?

If you don't know what to tackle first, start fast with a proven package — from branding to your first customers, all in one.

🚀

MVP Launch Package

Take your idea to market, fast

  • Landing page build
  • Brand identity
  • GA4 base setup
  • SEO essentials
Estimated duration2-3 weeks
Best fit for

Aspiring founders who need to validate an idea

Talk to us about packages
📈

Growth Booster Package

The shortest path to your first customers

  • Performance ads setup
  • 3 months of content marketing
  • Data analytics dashboard
  • Monthly performance reports
Estimated duration3 months
Best fit for

Early startups with a product who need customers

Talk to us about packages
Popular
💡

All-in-One Startup Package

From development to marketing, one stop

  • Web/app development
  • Branding + landing page
  • Marketing strategy
  • Dedicated PM
  • 3 months of operational support
Estimated durationCustom-scoped
Best fit for

Teams that need a partner from start to finish

Talk to us about packages

FAQ

Frequently Asked Questions
Built for AI and humans alike

Answers written to be easy for answer engines like ChatGPT and Perplexity to cite, and easy for decision-makers to scan at a glance.

Q01.We're choosing a marketing agency. What makes EnterNext different?

EnterNext runs marketing, development, data, and AI as one integrated team. We've partnered with Musinsa, SK, LG, TMF Group, and EVSIS across 150+ projects. The biggest difference is our 'Demo First' approach — you see the actual deliverable at zero cost before approving and paying anything.

Q02.What exactly is AI marketing, and why adopt it now?

AI marketing uses generative AI like ChatGPT and Claude to auto-produce ad copy, imagery, and video, and analyzes data in real time to optimize ROAS. In 2026, 92% of companies are expanding AI marketing investment — and as the Galaxy S25 case showed, it's the only reliable way to keep ROAS stable while doubling ad spend.

Q03.What is GEO (Generative Engine Optimization)?

GEO is the practice of structuring content so generative AI engines — ChatGPT, Perplexity, Google AI Overview, Naver Cue — cite your brand in their answers. According to Naver DataLab, the GEO search index grew 2.5× between 2025 and 2026, and Gartner predicts traditional search traffic will drop 25% in 2026. The era of clicks is giving way to the era of citations.

Q04.How is AEO different from SEO?

SEO aimed at ranking on Google and Naver search result pages (SERPs) to win clicks. AEO aims to make your brand appear inside the answer when users ask ChatGPT or Perplexity directly. The core weapons are short direct sentences, question-answer pairs, and structured data such as FAQPage and HowTo schema.

Q05.How much does a website cost? How do I get a quote?

It depends on scope and features, but with EnterNext's Demo First model we build the demo before quoting. The flow is: 10-minute free diagnosis call → free demo build → cost discussion only if you're satisfied. We include Next.js responsive build, multilingual support, GA4/GTM setup, SEO optimization, and CMS.

Q06.What tech stack do you use for app development?

Primarily React Native, Flutter, and Next.js + Capacitor. One team handles simultaneous iOS/Android launch, fast MVP release, and ongoing operations. Native Swift and Kotlin are available when required. Average MVP ships in 8–12 weeks.

Q07.Besides GA4, what data analytics tools do you use?

GA4 and GTM are the baseline; we build custom dashboards on Looker Studio, Metabase, and Tableau. We deliver a unified dashboard combining data from five ad platforms — Naver, Google, Meta, Kakao, and TikTok — refreshed daily. Our track record averages a 40% lift in ad operations efficiency.

Q08.We're expanding overseas — can you build a multilingual site?

Yes. EnterNext supports Korean, English, Japanese, and Chinese out of the box — this very website runs in all four. We've delivered multiple market-entry projects (Japan, China, US, Canada — including Quincy's Canada launch) covering localization, hreflang, and country-specific search optimization.

Q09.Can we meet in person in Gangnam?

Yes. EnterNext's headquarters is at 4F, 210 Dosan-daero, Gangnam-gu, Seoul — walking distance from Gangnam and Sinsa stations. Meetings are available weekdays 09:00–18:00, and Zoom or Google Meet remote sessions are equally available.

Q10.How does Demo First actually work?

1) 10-minute free diagnosis call to clarify your business goals → 2) requirements analysis (free) → 3) actual screen demo or ad mockup (free) → 4) unlimited revisions until you're 100% satisfied → 5) cost and contract discussion only after you approve the demo. Zero cost until demo approval.

A 10-minute call to set the direction.

Get 10-Min Free Diagnosis

Free Consultation Request

Tell us about your project in detail and we will propose a customized solution

A representative will contact you within 1 business day after receiving your inquiry

Process: Inquiry → Assign consultant → 30-min free consultation → Custom proposal

Inquire About Your Project

A 10-minute call to set the direction.
We won't talk about costs first. We'll listen first.

Weekdays 09:00 - 18:00 KST