.NET modernization
Move off .NET Framework without rewriting the business.
Phased migration from .NET Framework, classic ASP, and aging Windows workloads to .NET 8+ and Azure — preserving the production logic your organization still runs on.
.NET legacy modernization for Framework, ASP.NET, and on-prem Windows systems
Critical line-of-business apps often still run on .NET Framework, Web Forms, WCF, or classic ASP — with institutional knowledge shrinking every year. Maxiom modernizes those systems with strangler-fig and phased cutovers to .NET 8+ and Azure, documenting undocumented behavior and keeping production online while the new platform earns trust. We do not bet the business on a big-bang rewrite.
- 2002
- Founded
- $100M+
- Delivered
- 98%
- Satisfaction
The problem
The talent pool is shrinking
Engineers who know Framework 3.5–4.8, Web Forms, and WCF are harder to hire every year. Waiting raises institutional knowledge risk.
Every change feels unsafe
When nobody fully understands the system, deployments become political. Doing nothing looks safe — until the runtime or vendor support wall arrives.
AI cannot read what was never documented
Prompting a rewrite loses the edge cases encoded in production. Migration requires humans who can map behavior before generating modern code.
Our approach
Migrate the .NET estate. Do not gamble on a rewrite.
We read the existing system, preserve business logic, and move capability in phases — so production stays up while .NET 8+ and modern hosting earn the cutover.
Discovery and Framework mapping
Runtime versions, dependencies, COM/WCF surfaces, data stores, and undocumented behavior inventory.
Target architecture
.NET 8+ application model, API boundaries, identity, and Azure or hybrid hosting design.
Phased strangler migration
Component-by-component cutovers with regression coverage before each production switch.
Cutover and decommission
Old Framework paths retired only after the modern stack validates under real load.
How our .NET modernization engagement works
- NDA signed before access
- Read-only repository only
- Senior engineers every time
- Report in 10 business days
Frequently asked questions
What is .NET legacy modernization?
Planned migration of aging .NET Framework, ASP.NET, classic ASP, VB6/.NET interop, and on-prem Windows workloads to modern .NET (8+) and cloud infrastructure — while preserving embedded business rules and keeping production running.
Why not rewrite the .NET app from scratch?
Rewrites force you to rediscover years of edge cases, ship nothing for months, and often recreate the same problems. Phased .NET modernization delivers incremental value, validates each cutover, and retires the old path only after the new one proves itself.
Which .NET stacks does Maxiom modernize?
.NET Framework to .NET 8+, ASP.NET / Web Forms / MVC migrations, WCF to modern APIs, on-prem IIS to Azure App Service or containers, SQL Server modernization patterns, and classic ASP or VB6 systems adjacent to .NET estates.
How is this different from general legacy modernization?
This page is the .NET-specific engagement — Framework runtimes, Windows hosting, and Microsoft stack patterns. Broader platform migration across mixed stacks lives under Legacy Modernization.
Will modernization freeze feature delivery?
No. We sequence work so business-critical systems keep running and product work continues on a controlled path while migration components ship alongside operations.
Can AI tools modernize .NET Framework alone?
AI can accelerate generation of modern C#. It cannot reliably recover undocumented rules, stored-procedure edge cases, COM interop quirks, or integration behavior that was never written down. Senior engineers map and preserve that logic.
What does a .NET modernization assessment include?
Code and dependency mapping, risk inventory, target-state options (.NET 8+, Azure, containers), phased cutover plan, and a clear view of cost-of-delay if you wait.
Do you migrate to Azure only?
Azure is a common destination for Windows/.NET estates, but we design for the hosting model that fits your constraints — including hybrid and containerized targets — without forcing a cloud narrative that ignores compliance or cost.
How do .NET modernization engagements start?
With a scoping conversation on runtime versions, critical workflows, and downtime tolerance. Written scope and NDA precede deep repository or environment access.
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