It's not humans who read. It's AI who understands.
AI brings legacy to the future.
By adopting FARE, reduce system analysis workload by approximately 60% and achieve faster handoffs, maintenance, and migration.
Do you have these concerns?
Four common challenges in legacy system maintenance and migration
課題 01Missing Design Documentation
Confusion with every update. No one can accurately explain how the current system works.
課題 02High Cost for System Re-analysis
Old technology, complex structure. Time and cost vanish just from reading the code.
課題 03Slow Developer Onboarding
Understanding stalls due to lack of documentation. New members take months to become productive.
課題 04High Risk During Maintenance & Migration
Small changes cascade through the entire system. Unexpected failures stop projects in their tracks.
But—what if AI could understand everything in just days?
Why FARE is Chosen
AI automates "understanding". Transform system analysis with speed and precision.
Overwhelming Speed and Efficiency
AI analyzes millions of lines of code in days. Reduces manual work by up to 80%.
Deep Analysis x High-Precision Document Generation
Auto-visualize system structure and business logic. Instantly output design docs in PDF, Excel, Markdown.
Safe On-Premise Execution
Complete AI analysis within your internal environment. Maintain high performance without external data transmission.
Multi-Language Support Including COBOL
COBOL, Pro*C, VB.NET, C, Python and more. Flexible analysis from legacy to modern environments.
Auto-Create System Diagrams
Auto-generate class, component, and sequence diagrams. Understand complex structures at a glance.
Real-Time AI Chat Explanation
Explain code logic in natural language. AI instantly answers "why it works".
With FARE, you don't need to spend time understanding. AI will 'understand your system in days.'
Legacy Analysis Track Record
FARE analyzes and visualizes — enabling confident migration decisions
COBOL Legacy System Analysis
FARE auto-analyzes COBOL code structure, business logic, and data flows, generating comprehensive design documentation. Enables migration planning with full visibility into legacy system complexity.
Struts Web Application Analysis
FARE visualizes existing Struts application structure, maps dependencies across modules, and identifies migration risks. Provides clear modernization roadmap for Spring Boot migration.
Benefits
60–66% workload reduction. 3x faster team launch.
Comprehensive system understanding with large context processing
High-precision support for COBOL and legacy systems
Complete confidential data protection with on-premise model
High performance reduces workload and boosts productivity
What takes 6–12 months manually, FARE completes in days.
8-Dimension Quality Metrics
85–93% accuracy across multiple quality dimensions
※ Accuracy based on average from verified projects
Supported Languages
Compatible with 10+ legacy and modern technologies
LegacyModern
FARE Input / Output
Source code (any language)
Design documents (Excel / PDF / Markdown)
System diagrams (Class diagrams, Sequence diagrams)
AI chat for real-time code explanation
Success Stories
Proven results across Finance, Manufacturing, Logistics, ERP and more
Major Japanese Telecom (Tens of Millions of Subscribers)
Legacy System Migration
Deployed FARE to automatically analyze a large-scale legacy system (80+ subsystems) operated for 17 years, establishing foundation for 7th generation system migration.
Re-visualized entire system structure, accelerating new development and maintenance setup. A successful case of legacy transformation x AI documentation.
Mega-Bank Class Japanese Financial Institution
COBOL System Visualization
For COBOL+JCL core systems, design document updates were missed and knowledge loss became critical. FARE automatically analyzed millions of lines, reconstructing business logic.
Accurately visualized COBOL assets, establishing foundation for future reconstruction and cloud migration. Dramatically reduced manual maintenance and eliminated dependency risks.
Global Manufacturer (Tens of Thousands of Employees)
Multi-Language Integration
Legacy systems mixing C, Java, and COBOL operated across locations. FARE analyzed different languages on unified platform, auto-generating design documents with standardized templates.
Built a documentation foundation enabling common understanding across global teams. A model case for safely transitioning legacy COBOL assets to next-gen systems.
Competitive Comparison
Do you think all 'AI analysis' tools are the same? Only FARE delivers speed that works in the real world.
Implementation Process
Prove what AI can do in just 4 weeks.
Requirements Gathering
Confirm current challenges and analysis targets. Clarify objectives.
Week 1
Environment Setup
Set up FARE in your environment. Safe and rapid analysis preparation.
Week 1
Auto Analysis
AI analyzes code and auto-generates design documents and system diagrams.
Week 1
Results Review
Share deliverables and efficiency gains. Confirm implementation value.
Week 1
What You Get After POC
Design documents generated from real systems (Excel / PDF)
Effort reduction report and ROI analysis
POC Benefits
Validate FARE's effectiveness at no cost
Use deliverables directly in real business
Full support from dedicated Fabbi engineers
FARE Operation Model — Human-in-the-Loop
AI and human collaboration for highest quality results
Level 1: Client Execution + Fabbi Support
Client operates FARE, Fabbi provides technical support
Level 2: SIer + Client Collaboration
SIer or Fabbi leads, collaborating with client
Deployment Models
Flexible deployment from PoC to production
Private Cloud
Sakura Internet
Secure operations in Japanese data centers. Full data sovereignty.
On-Premise
Client Environment
Fully compliant with your security policies. No external data transfer.
Public Cloud
AWS / GCP / Azure
Scalable and flexible configuration. Support for global deployment.
Partnership with Sakura Internet ensures reliable operations within Japan.
Security & Compliance
Enterprise-grade security for your source code
Local Security
Your data never leaves your internal environment
- On-premise execution
- No external data transfer
- Air-gapped environment compatible
- Internal network only
Contract Security
Data protection backed by contract
国際セキュリティ基準に準拠し、契約によるデータ保護をお約束します
Built for Japan Enterprise
Tokyo Office On-Site Team
Japanese-speaking support for implementation, technical assistance, and operations — directly from Tokyo.
ISO 27001 / ISO 9001 / Privacy Mark
Certified security posture meeting strict requirements of financial, public, and manufacturing sectors.
Sakura Internet Compatible
Japanese private cloud for data sovereignty. Your source code stays in Japan from PoC to production.
Full On-Premise Support
Analyze source code without sending it outside your network. Air-gapped environment fully supported.
Ready to modernize your legacy systems?
Start with a free PoC and see the results in 4 weeks.