Why Modernize Now
Legacy systems are no longer cheaper to keep.
Aging mainframes and monolithic applications consume 60–80% of enterprise IT spend on maintenance—starving budgets for innovation and creating compounding security, talent, and resilience risk.
DSYS Inc. modernizes large, regulated, mission-critical estates with the engineering discipline of a delivery firm and the strategic clarity of a top-tier consultancy—mapping every system to the right 6R strategy and sequencing the wave plan around business outcomes, not technology preference.
6R Modernization Framework
The Right Path for Every Application
Not every legacy system needs to be rebuilt. We match each application to the modernization strategy with the best risk-adjusted return.
Rehost
Lift-and-shift to cloud infrastructure with minimal changes—fastest path off failing hardware, ideal when application code is stable.
Replatform
Move to managed services (databases, runtimes, queues) without rewriting the application—cut operational toil while preserving logic.
Refactor
Restructure code into modular services to improve maintainability, testing, and team velocity without changing external behavior.
Rearchitect
Re-design around cloud-native patterns—microservices, event streams, serverless—when scale or new capabilities demand it.
Rebuild
Replace the application from scratch using modern frameworks—reserved for systems where retrofit cost exceeds rebuild cost.
Replace
Retire bespoke systems in favor of commercial SaaS where the differentiation no longer justifies custom code.
Delivery Methodology
A Repeatable, Wave-Based Approach
Five stages that turn a sprawling legacy estate into a predictable, measurable modernization program.
Discover
Catalog applications, dependencies, integrations, data flows, and operational pain points across the legacy estate.
Assess
Score each system on business criticality, technical risk, cost-to-operate, and modernization fit using the 6R framework.
Plan
Sequence the modernization wave plan with quick wins, dependency unblocking, and a clear ROI model per application.
Modernize
Execute migrations in parallel tracks with automated testing, dual-run validation, and zero-downtime cutover patterns.
Operate
Transition to cloud operating model with SRE practices, FinOps controls, and continuous modernization backlog.
Where We Modernize
High-Stakes Estates, Proven Playbooks
Decommissioning COBOL mainframes while preserving 30+ years of business logic and audit history.
Migrating core banking platforms with zero transaction loss and full regulatory traceability.
Modernizing ERP and shop-floor systems built on legacy languages and unsupported runtimes.
Re-platforming clinical systems while preserving HL7/FHIR integrations and HIPAA compliance posture.
Ready to Retire the Legacy Tax?
Our modernization specialists will assess your estate and deliver a sequenced, risk-adjusted wave plan in four weeks.
Schedule an Assessment