Convert Classic ASP to ASP.NET & Blazor — in weeks, not years.
Classic ASP is out of support, hard to staff, and blocking your move to the cloud. Manual rewrites take 12–24 months. Generic AI tools generate code but won't validate it.
VELO is different. Our purpose-built agentic AI combines deterministic precision with 35+ years of modernization expertise to transform your Classic ASP application into clean, alpha-ready C#/.NET and Blazor — with 100% of your business logic preserved.
Classic ASP wasn't built for the cloud era
Your Classic ASP application is mission-critical — but the platform underneath it is a liability. Microsoft retired Classic ASP support, the talent pool is shrinking, and every quarter you delay raises the cost of staying on legacy infrastructure.
Unsupported & insecure
Classic ASP runs on outdated IIS configurations and VBScript — both out of mainstream support, with growing exposure to security vulnerabilities and compliance gaps.
Expensive to maintain
Specialized ASP and VBScript talent commands a premium. Every patch, dependency, and integration takes longer and costs more than it should.
Blocks cloud & AI strategy
Mixed HTML/VBScript code, server-side includes, and ADO data access can't take advantage of Azure, Blazor, or modern AI services — your roadmap stalls until ASP is modernized.
Manual rewrites and generic AI tools don't get ASP to production
ASP.NET is architecturally different from Classic ASP — different language, different runtime, different deployment model. Two common approaches both fall short:
Manual rewrites: too slow, too risky
Hand-rewriting Classic ASP to ASP.NET routinely runs 12–24 months at enterprise scale. Business logic gets lost in translation, edge cases surface in production, and the original team rarely survives the project intact.
Generic AI tools: fast, but unreliable
Copilot and Claude Code generate code. They don't validate it. Without deterministic verification, you get hallucinated APIs, broken includes, and silent logic drift — none of which surface until your QA team finds them weeks later.
The business value of AI-powered ASP migration
VELO is purpose-built for legacy modernization. Three value pillars, one outcome: a modern, cloud-ready application your team can own.
Speed & Cost
- Alpha-ready code in weeks, not years
- 40–50% faster delivery vs. manual rewrites
- Up to 50% lower total modernization cost
Accuracy & Continuity
- 100% business logic preservation, guaranteed
- Deterministic validation — zero AI hallucinations
- Full audit trails and explainability for every transformation
Future Readiness
- Modern C#/.NET and Blazor output your team can extend
- Azure-native, cloud-deployment ready
- Built on Microsoft Foundry — enterprise-grade by design
How VELO migrates your Classic ASP application
Five stages, fully managed by GAPVelocity AI. You bring the codebase. We deliver the modern application.
VELO Analysis
Specialized agents examine ASP forms, includes, data calls, and dependencies to map the full application.
Deterministic Mapping
Our patented engine maps Classic ASP and VBScript to C#/.NET with compiler-grade precision.
Code Generation
Conversion agents generate clean Blazor and .NET code following current best practices and Entity Framework patterns.
QA Validation
QA agents verify functional parity. Every transformation is tested against the original behavior before delivery.
Delivery
Alpha-ready code, documentation, and a knowledge transfer session so your team can take ownership.
What VELO handles for ASP migrations
Every Classic ASP construct that traditionally breaks rewrites — handled.
Native ASP object mapping
QueryStrings, cookies, forms, and application scripting are mapped to their ASP.NET equivalents — automatically.
VBScript to C# translation
VBS functions and constructs are translated to clean, idiomatic C# inside your new .aspx and Blazor components.
Server-side includes resolved
Multi-level include dependencies are flattened, deduplicated, and refactored into reusable .NET components.
Declaration separation
Mixed declarations and code are automatically separated to comply with ASP.NET architecture and Visual Studio conventions.
ADO to Entity Framework
Legacy data access layers are mapped to modern Entity Framework patterns — ready for Azure SQL or your cloud database of choice.
Reference refactoring
All .asp file references are rewritten to the new ASP.NET / Blazor file structure — no broken links, no manual cleanup.
Legacy application modernization, delivered at enterprise scale
A global manufacturing leader replaced a critical legacy application with a modern cloud-native Blazor app — preserving every business rule, with zero downtime to operations.
Backed by 35+ years of modernization expertise
VELO isn't a generic AI wrapper. It's the product of three decades of legacy migration work — codified into a hybrid AI system that combines deterministic precision with agentic flexibility.
Microsoft Solutions Partner
Digital & App Innovation (Azure) certified. VELO is built on Microsoft Foundry and tuned for Azure-native delivery.
Enterprise security & compliance
Runs in your Azure tenant. Your data, under your control. Audit trails and explainability for regulated industries.
Hybrid AI approach
Deterministic AI for known patterns. Agentic AI for context-dependent transformations. Expert engineers for last-mile production readiness.
Trusted by enterprises worldwide
"GAP tools create readable, maintainable, quality code. GAP uses familiar architecture and patterns which made it easy to immediately step into the code."
"Growth Acceleration Partners has a strong track record of building products that successfully automate challenging source code migrations."
Trusted by 80% of the Global 2000
Frequently asked questions about ASP modernization
How long does an ASP migration take?
Most Classic ASP migrations with VELO complete in weeks rather than the 12–24 months typical of manual rewrites. Final timeline depends on codebase size, integration complexity, and last-mile production requirements — your assessment will give you a precise estimate.
Do you preserve business logic?
Yes — 100%, guaranteed. VELO's deterministic engine maps every Classic ASP construct to its modern .NET equivalent at the semantic level, with QA agents verifying functional parity before delivery. No silent logic drift, no hallucinated behavior.
Is this a full rewrite?
No. VELO is an automated transformation, not a rewrite. Your existing business logic, data flows, and user workflows are preserved and translated — not reimagined from scratch. That's how we get to weeks instead of years.
What target platforms are supported?
VELO migrates Classic ASP to modern C#/.NET with Blazor for the web tier, and Azure-native deployment patterns for cloud delivery. Other targets, including React front-ends, are available via our GenAI proxy path.
Can we modernize incrementally?
Yes. VELO supports phased migrations — start with a single application or module via our Free Trial or ByteInsight assessment, then expand. Many customers begin with a proof-of-concept on a representative subset of their ASP codebase before committing to full migration.
What happens post-migration?
VELO delivers alpha-ready code that compiles and has been validated for functional equivalence. Our AI Squad handles the last-mile work to get you to production: business-logic edge cases, integration testing, and deployment. Knowledge transfer is included so your team owns the modern codebase from day one.
How is VELO different from Copilot or Claude Code?
Copilot and Claude Code generate code. They don't validate it against the original behavior. VELO combines deterministic verification — built on 35+ years of migration expertise — with agentic AI and expert engineers, delivering production-bound code instead of suggestions.
Go deeper on ASP modernization
VELO: Agentic AI Modernization
See how VELO's hybrid AI architecture delivers modernization at enterprise scale.
Learn about VELO →ByteInsight: Free Code Assessment
Run a no-cost analysis of your Classic ASP codebase and get a modernization readiness score.
Run a free assessment →Migration Methodology
Our proven framework for de-risking enterprise legacy modernization, from assessment to production.
View the methodology →Ready to modernize Classic ASP?
See your code modernized. Start with a free trial or talk to a modernization engineer about your application.
