“Zero-Entropy
Legacy Transformation
Legacy Systems
Drain Businesses Resources
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
Extract embedded logic and rebuild on your target stack.
OLSYS extracts business rules from COBOL, PL/SQL, Java/JSP, ASP.NET, and more, re-architecting them onto Spring Boot, .NET Core, Node.js, or Python. Running an unlisted framework? Submit your repository for a thorough 5-day feasibility evaluation.
Control agentic delivery with stage-gated team approvals.
Executed across 18 steps within 6 structured phases. Independent verification passes and cross-functional sign-offs gate every phase transition. Delivered via modular feature slices, any functional discrepancy automatically routes back to discovery for immediate remediation.
Guarantee functional parity before engineering begins.
Traditional rewrites stall on undocumented tribal knowledge (12–24 months). Unassisted LLMs deploy hallucinated code inferences (3–5 months). OLSYS validates extracted logic against live operational data, deploying fully verified feature slices in just 2–4 months.
Blueprint your system by week 6 and achieve full autonomy by month 4.
Discovery delivers an exact operational blueprint of your current system. We transition your modern platform to production one feature slice at a time, equipping your engineering team with complete ownership of the code, IP, and automated maintenance workflows.
What Makes the
Transformation Predictable
Align Business Operations
Empower business leaders to validate core logic before building begins. Ensure final state reflects actual workflows rather than outdated legacy constraints.
Maintain Continuous Audit
Track every requirement, architectural decision and sign-off with clear documentation. Lock in a single source of truth to eliminate ambiguity & preserve institutional knowledge.
Catch Defects Early
Surface and resolve issues within the exact phase they originate. Eliminate late-stage QA surprises and reduce overall remediation costs by up to 8x.
Ensure Budget Predictability
Business logic is captured and verified automatically before coding starts. Delivering in discrete, modular feature slices prevents scope creep & eliminates late-stage rework.
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.
