Core systems that "no one fully understands" — made visible with AI, and migrated safely.
Reliance on individuals. No specifications. Escaping Excel. We turn a black box that has run for over a decade into a map AI can reason about, and support you all the way through to modernization.
Core systems modernization is the work of turning a core system that has become a black box, reliant on individuals with no specifications, into a map AI can reason about, and moving it to safety without stopping operations. We start with a current-state visualization of a single system.
Find by challengeFind by challenge
The people who built it have left, and no one can grasp the whole picture. We use AI to visualize it and bring it to a state where decisions can be made.
Quotes, cost calculations, and forms still run on Excel and manual work. We replace them with business apps and reduce manual effort.
Orders are handled by phone, fax, and legacy systems. We modernize sales, order management, and inventory management, and connect the workflow.
You can't judge how to safely move a core system that can't be stopped. We start with current-state visualization so you can judge whether migration is needed and in what order.
Solutions that fit this industrySolutions that fit
We use AI to visualize the black box and bring it to a state where migration decisions can be made.
We quickly replace quotes, forms and ledgers, and applications with business apps.
We modernize sales, order management, and inventory management, and connect the workflow.
AI supports requirements definition and migration script creation (with final human review).
We also offer other solutions including CRM for SMEs (centralizing customer information to maximize sales results), ERP for SMEs (an all-in-one operations platform), accounting management systems (accurate, flexible financial management), and HRM systems (centralizing attendance, payroll, and staff information).
Judge us by results in your industryProof in your industry
Modernized quote and cost calculations that relied on Excel. Automated quoting and Salesforce integration bring sales into full view
Took over a sales management system stalled by the absence of design documentation, from current-state visualization through gap analysis and implementation. Brought orders through to billing and payment reconciliation back online
Migrated an existing system to PHP Laravel (platform modernization). Moved to a platform built for long-term maintainability and extensibility, while running feature development in parallel
How AI drives core systems modernization
- As pointed out in the "2025 Digital Cliff" (METI's DX Report), keeping legacy core systems running costs more and carries more risk every year. We first visualize the current state with AI in 2 to 5 business days (depending on scale), so you can then judge whether migration is needed and in what order.
- Every diagram and difference AI produces comes with supporting evidence (file names and locations), and is always reviewed by an engineer before delivery. We never leave it to AI alone.
- Even after migration, we stay with you to keep functionality at least at its current level, resolve technical debt, and leave behind documentation so you won't be stuck next time.
- On data migration, we have a track record of streamlining and improving the precision of migration itself, including a tool we built to automate migration from Lotus Notes to kintone (from XML parsing through to automatic app generation).
Frequently Asked QuestionsFrequently asked
We have no specifications, and the people who built it are gone. Can it still be visualized?
Yes. Assuming there are no specifications or documentation, AI reads the structure directly from the source code and database, and organizes the current state into a map you can make decisions from. You can start with an initial assessment (current-state visualization) scoped to a single system.
How do you safely migrate a core system that can't be stopped?
Rather than replacing everything at once, we first use visualization to determine whether migration is needed and in what order, then proceed step by step starting with the necessary parts. We propose a risk-controlled plan built on the premise of preserving current functionality throughout the move.
We're worried about quality if this is left entirely to AI.
We never leave it to AI alone. Every diagram and difference AI produces comes with supporting evidence (file names and locations) and is always reviewed by an engineer before delivery. After migration, we leave documentation behind and stay with you until you won't be stuck next time.
Is our source code or data used to train AI?
No. Source code, databases, and business data are handled only within the scope defined by contract, and are never used for AI training. We sign an NDA and strictly maintain confidentiality.
Start with a current-state visualization of just one system.
You can start with an initial assessment scoped to a single system. Under NDA, we deliver materials you can use for internal approval.