Deterministic AI-Powered
Legacy Modernization
Legacy systems don’t fail overnight.
They drain businesses year by year.
Typical challenges organizations face with legacy systems.
Captive Knowledge
Critical business logic is buried in code. Very few people, if any, still fully understand it.
Critical business logic is buried in code. Very few people, if any, still fully understand it.
Talent Cliff
Legacy experts are retiring, and fewer engineers are learning the technology. Talent pool keeps shrinking.
Legacy experts are retiring, and fewer engineers are learning the technology. Talent pool keeps shrinking.
Maintenance Drain
Licenses, patches, and support costs consume a growing share of the IT budget.
Licenses, patches, and support costs consume a growing share of the IT budget.
Security Debt
Keeping systems secure & data protected is an ongoing catch-up, driving up costs & risks exposure.
Keeping systems secure & data protected is an ongoing catch-up, driving up costs & risks exposure.
Regulatory Pressure
Compliance requirements evolve constantly. Legacy platforms struggle to keep pace.
Compliance requirements evolve constantly. Legacy platforms struggle to keep pace.
Cross-System Drag
Legacy impact is hard to isolate. It tends to slow down many processes connected to it.
Legacy impact is hard to isolate. It tends to slow down many processes connected to it.
Modernize with Confidence
Recover the intent legacy code forgot.
GenOLSYS™ Eltegra combines legacy code, requirements, support tickets, test cases, and experts interviews into one deterministic knowledge graph that governs the rebuild.
Walk away with a complete modernization package.
With our deterministic 5-step approach, you receive a fully modernized application, complete documentation, a comprehensive test suite, and a Dynamic Knowledge Graph.
Modernize to the tech stack of your choice.
Stack not listed? Most legacy systems share the same recovery problem. Send us the codebase and we will tell you within 5 business days.
Extract every rule before writing a single line of code.
GenOLSYS™ Eltegra runs multi-pass extraction and validation across your code, documentation, tickets, and expert interviews, then locks a validated intent model before generation starts.
See the real benefits before you commit to a rewrite.
Traditional rewrites run on unmeasured SME memory and take up to 2 years. LLM-only tools cut time but stay non-deterministic and billed per query. OLSYS delivers 99%+ business logic accuracy, graph-locked and verifiable output, faster, leaner, and at a significantly lower cost than either approach.
Get Faster Delivery with
99%+ Functional Parity
Faster Time to Production
Discovery is complete in weeks. Full delivery is expected in 2-4 months on average.
Business Intent Accuracy
99%+ of business logic is captured and confirmed before a single line of code is written.
Total IP Ownership
A modernized system on the stack of choice. No strings attached or ongoing dependency.
Compliance & Deployment
Deployed on-prem or in an isolated cloud. Compliance requirements covered from the start.
A Case Study
COBOL to Java Modernization
~2.5M LOC mid-size enterprise, full migration
A mid-size enterprise needed a full COBOL-to-Java migration across 2.5 million lines of code.
The result: a 7-month migration delivered in 3.5 months. Discovery, dependency mapping, and requirements gathering dropped from 2 months to 3 weeks. Flow-by-flow code generation compressed from 2.5 months to 6 weeks. Integration, QA, and handoff finished in 3 weeks instead of 4.
Total savings with the Olsys’ Deterministic AI-Powered Legacy Modernization: 3.5 months, $175K, 5,600 engineering hours.
AI coding agents alone would have taken 7 months and still required extensive rework from hidden dependencies.
Olsys At a Glance
America
Europe
East
Asia
Transform The Legacy in Weeks
Pair AI with deep engineering expertise to transform the legacy system, streamline delivery and unlock new value.
