Map
DiscoveryRead the existing code, document behavior, and build a migration scope and risk inventory.
- Current system behavior
- Integration and data risks
- What must not break on day one
You get: a migration risk inventory
Legacy modernization without losing the business logic your organization depends on
The systems nobody wants to touch are often the ones the business cannot operate without. Maxiom migrates aging .NET Framework, VB6, classic ASP, and on-premises infrastructure to modern .NET 8 and Azure using phased strangler-fig patterns — keeping production running while the new platform is built and validated alongside it. We read the existing code, document undocumented behavior, and preserve embedded business rules that AI tools and rewrite projects routinely lose.
- 2002
- Founded
- $100M+
- Delivered
- 98%
- Satisfaction
The problem
You cannot hire for it
The pool of engineers who know .NET Framework 3.5, VB6, or classic ASP is shrinking every year. The institutional knowledge risk is the same.
Every change is a production risk
When nobody fully understands the system, every deployment carries risk. The safest option becomes doing nothing, which is also a choice with consequences.
AI tools cannot migrate what they cannot understand
AI coding tools can generate modern .NET 8 code. They cannot reason about undocumented business rules, exception handling embedded in stored procedures, or integration behavior that was never written down.
Our approach
We do not rewrite systems. We migrate them.
A full rewrite is the highest-risk modernization approach. It requires completely respecifying behavior that the old system encodes implicitly, and it produces nothing until the very end. We use a phased migration approach that keeps the existing system running while the new one is built alongside it.
Phase 1: Discovery and mapping
We read the existing code, document what it does, and build a migration scope and risk inventory.
Phase 2: Architecture design
Target state definition, data model design, integration point mapping.
Phase 3: Phased migration
Component-by-component, strangler fig pattern where appropriate, regression coverage before each cutover.
Phase 4: Cutover and decommission
Old system retired only after new system validates in production.
How our legacy modernization engagement works
Kickoff
- 01
- 02
Design
Target architectureTarget state definition, data model design, and integration point mapping.
- Target application model
- Data and identity cutover points
- Strangler vs. rewrite decision
You get: a written target state
- 03
Migrate
Phased cutoversComponent-by-component migration with regression coverage before each cutover.
- New paths beside the old system
- Regression coverage before each switch
- Named engineer on each increment
You get: progress you can put in production
- 04
Retire
Cutover · decommissionThe old system is retired only after the new system validates in production.
- Production validation under real load
- Decommission plan, not a leftover dual-run
- Handoff and runbooks
You get: one system, not two to maintain
.NET Framework to .NET 8+ (primary strength)On-premises infrastructure to AzureClassic ASP and VB6 to modern web architecturesMonolithic architectures to modular or service-oriented designsLegacy SQL Server to modern database patterns
- NDA signed before access
- Read-only repository only
- Senior engineers every time
- Report in 10 business days
Frequently asked questions
What is legacy software modernization?
Legacy modernization is the planned migration of aging systems — .NET Framework, on-premises servers, VB6, classic ASP — to modern infrastructure and frameworks while preserving the business logic encoded in years of production code. Maxiom uses phased migration, not big-bang rewrites.
Why not rewrite instead of migrate?
A full rewrite requires respecifying behavior the old system encodes implicitly, ships nothing for months, and often recreates the same architectural problems. Phased migration delivers incremental value, keeps the existing system running, and validates each component before cutover.
What technology stacks does Maxiom modernize?
.NET Framework to .NET 8+, on-premises to Azure, classic ASP and VB6 to modern web architectures, monoliths to modular designs, and legacy SQL Server to modern database patterns.
What is the strangler-fig migration approach?
It is a phased pattern where new components gradually replace legacy capabilities while production continues to run. Each cutover is validated with regression coverage before the old path is retired.
Will modernization stop product delivery?
No. Maxiom designs migrations so business-critical systems keep running. Work is sequenced so new platform pieces ship alongside existing operations rather than freezing the roadmap for a rewrite.
Can AI tools modernize legacy systems on their own?
AI can accelerate generation of modern code, but it cannot reliably recover undocumented business rules, stored-procedure edge cases, or integration behavior that was never written down. Senior engineers map and preserve that logic during migration.
What does a modernization assessment include?
Discovery and code mapping, a risk inventory, target-state architecture options, estimated migration phases, and a clear view of what happens if you wait — before any cutover work begins.
Which industries typically need legacy modernization?
Enterprise, federal and government programs, healthcare IT, and other organizations running aging .NET, on-premises, or custom systems that still carry critical business logic.
How does legacy modernization relate to tech debt resolution?
Tech debt resolution remediates accumulated quality and architecture debt inside a living codebase. Legacy modernization migrates aging platforms to modern stacks when the current runtime, language, or infrastructure can no longer support the business.
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