02 / DEVELOPMENT > AI-DRIVEN CORE > AI-DRIVEN DEVELOPMENT
Build at AI Velocity.
Without Compromising
Quality.
AI-Driven Development. Quality Guaranteed.
Many companies claim to do AI-Driven Development.
Few, however, can show you exactly how they guarantee quality.
MASSIVE LINKS delivers development that CTOs can trust —
backed by a 7-gate quality process that balances
speed with rigorous standards.
40-60%
FASTER
Productivity Boost
7
GATES
Quality Gates
4+1
CONTRACTS
Engagement Models
THE TRUTH
The truth about AI-driven development.
Common exaggerations
「AI makes development 10x faster」
「No engineers needed — fully automated」
「AI writes all the code for you」
These are exaggerations.
Real value
40–60% speed improvement in the implementation phase
（Design, spec review, and code review are separate）
Automation of boilerplate code and test code generation
Efficient documentation generation
Bug detection and debugging support
Refactoring suggestions
Code review assistance
This is the true value of AI-driven development.
[What remains unchanged]
🧠
Architecture design
AI can only do local optimisation
⚖️
Understanding business requirements
Human judgement on what is truly needed
🔐
Security decisions
Risk must be evaluated by humans
🤝
Team management
Human-to-human dialogue is essential
AI is a powerful “weapon.”
But it takes a human engineer to wield it.
THE DIFFERENCE
The evolution of development across 3 axes.
Implementation: 2-3 months
Implementation: 1-1.5 months
Man-month: ¥15M
Man-month: ¥9M
Person-dependent bug rate
Improved with AI support
Tends to be deprioritized
Auto-generated in parallel
Heavy implicit knowledge
Explicit design
Important: Quality doesn’t drop — it improves.
With proper AI-driven development, quality actually improves.
- ▸Comprehensive test generation by AI
- ▸Automated code review reduces human error
- ▸Thorough documentation
- ▸Improved maintainability through explicit design
OUR PROCESS
7-Stage Quality Gates.
Because AI generates it, human quality checks matter.
MASSIVE LINKS' development process has 7 quality gates built in.
Formalising requirements
- ・Accurate understanding of business requirements
- ・Explicit non-functional requirements
- ・Agreed priorities
AI Tools
Claude (requirements organisation, ambiguity detection)
Architecture design review
- ・Scalability
- ・Security requirements
- ・Future extensibility
- ・Minimising technical debt
AI Tools
Claude (architecture proposal verification)
Code generation & AI pair programming
- ・Implementation with Cursor / Claude Code
- ・Continuous review by engineers
- ・Human evaluation of AI suggestions
AI Tools
Cursor
Claude Code
GitHub Copilot
Static analysis & Lint
- ・ESLint / Prettier / Ruff
- ・Type checking (TypeScript, mypy, etc.)
- ・Security scanning (Snyk, etc.)
- ・Integrated into CI/CD
Automated test execution
- ・Unit tests (including AI-generated)
- ・Integration tests
- ・E2E tests (Playwright, etc.)
- ・Target: 80%+ code coverage
Human code review
- ・Review by experienced engineers
- ・Business logic accuracy
- ・Performance verification
- ・Maintainability assessment
AI Tools
Claude (review assistance)
Pre-deployment integration validation
- ・Testing in staging environment
- ・Security scan
- ・Performance measurement
- ・Final documentation check
[7 Gates Breakdown]
Gates involving human judgment: 4/7 (57%)
AI generates, humans review.
This combination guarantees quality.
OUR TECH STACK
Technology stack and coverage areas.
【AI development tools】
Claude Code
Agentic development
Cursor
AI-integrated IDE
GitHub Copilot
Code completion
【Frontend】
React
Next.js
App Router
TypeScript
【Backend】
Node.js
Express / NestJS
Python
FastAPI / Django
Go
【Database & Infrastructure】
PostgreSQL / MongoDB / Redis
AWS / GCP / Azure
Vercel / Docker / Kubernetes
Development coverage areas
Web applications
SaaS products
API & backend infrastructure
Business systems
Mobile apps (React Native, etc.)
AI / LLM / RAG applications
AI agent systems
AI-driven refactoring of existing systems
CONTRACT OPTIONS
Choose the contract type that fits you best.
The best contract type varies by project. MASSIVE LINKS supports all four major contract formats.
Quasi-mandate (SES)
Pay based on engineer working hours.
Best suited for
- ・Requirements may change
- ・Scope is not clearly defined
- ・Flexible development structure needed
Billing
Monthly hours-based (fixed hours / with upper-lower bounds)
Fixed-price (Lump-sum)
Contract based on delivery of a completed product.
Best suited for
- ・Requirements are clearly defined
- ・Fixed budget required
- ・Clear deadline
Billing
Lump-sum on project completion (per phase)
Lab-style (Retainer)
RecommendedSecure an engineering team at a fixed monthly rate.
Best suited for
- ・Long-term development structure needed
- ・Continuous improvement & operations
- ・Want to use us like an in-house team
Billing
Fixed monthly rate (3–6+ month contract recommended)
Hybrid
Combine the optimal contract type per phase.
Best suited for
- ・Quasi-mandate for requirements, fixed-price for development
- ・Fixed-price initially, lab-style for operations
- ・Optimise by phase
Billing
Separate contract per phase
[Selection Guide]
We will help you determine the best contract type in your first consultation.
HONEST TRUTH
Where it fits — and where it doesn’t.
AI-driven development is not the right fit for every project. We’ll be upfront with you.
✅ Where AI-driven development excels
- ▸New web application / SaaS development
- ▸Speed-first MVP development
- ▸Business systems with many standard CRUD operations
- ▸Development using modern tech stacks
- ▸OSS / APIs where rich documentation matters
- ▸Robust test-driven implementation
Expected effect: 40–60% faster development (implementation phase)
⚠️ Where AI-driven development is not a good fit
- ▸
Development using proprietary legacy technology
（Limited AI training data in this domain）
- ▸
Requiring extremely specialised domain knowledge
（Expertise AI cannot comprehend）
- ▸
Ultra-high performance / extreme optimisation
（Game engines, HFT, etc.）
- ▸
Hardware control / embedded systems
（Not an AI strength）
- ▸
Mission-critical with top-secret data
（Risk of sending sensitive data to AI）
In these cases, we recommend conventional development.
🔄 Case-by-case situations
- ▸Large-scale, complex enterprise systems
- ▸Modification of existing legacy systems
- ▸Regulated industries: finance, healthcare, etc.
In the first consultation, we will determine the right mix of AI-driven and conventional development for your project.
We won't claim “AI can do anything.”
We will honestly tell you whether we can truly deliver value for your project.
WHY MASSIVE LINKS
The MASSIVE LINKS advantage.
01
7 × 4
AI-driven ×
Quality assurance combined
Most companies offer either AI-driven development or quality assurance — not both. MASSIVE LINKS pursues both simultaneously.
7-stage quality gates, with human review at 4 of them. AI-powered output combined with human quality assurance.
02
4+1
All contract types
covered
Quasi-mandate, fixed-price, lab-style, hybrid. We propose the optimal contract type for your project phase and requirements.
Large SIers are inflexible; startups offer quasi-mandate only. MASSIVE LINKS handles them all.
03
One-stop
Marketing integration for
results beyond launch
We don't just ship and disappear. Post-launch marketing (Strategy, Creative, Operations) is available from the same team.
From system development to customer acquisition — all handled within MASSIVE LINKS.
FAQ
Frequently Asked Questions
For CTOs and Development Leads
We never train AI on your source code. We use business plans for Claude, Cursor, and other tools to restrict data usage. After signing an NDA, we can share our detailed security policy.
Ready to Build
at AI Velocity?
Start AI-Driven Development.
The first 60-minute technical consultation is free.
We will honestly assess whether AI-driven development suits your project.
60-min Technical Consultation
For CTOs & Development Leads
Book Now →
Technical Documents
Development Process & Tech Stack
Download →
* NDA can be signed before the first consultation.
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