Agentic modernization, delivered. Accurate, complete, on time.
.NET Migration Services: Accurate, Complete, On Time
We execute the migration — you get validation evidence at every step.
Swimm’s .NET migration services take on complex migrations directly — clear scope, validation, and staged delivery from planning through execution. A services engagement with a fixed price, not a migration tool with a license. Swimm is a product-enabled service company. We combine deterministic analysis for accuracy, AI for scale, and SMEs to catch what tools miss.
The problem
Legacy .NET gets more expensive every year
Legacy .NET doesn't stay flat — it gets more expensive to touch every year you wait.
01
Legacy .NET carries mounting risk. Outdated frameworks, unsupported dependencies, and shrinking pools of people who understand the original design.
02
Dependency blind spots stall rewrites. Migrations start confidently and then stop the moment they hit a dependency nobody mapped first.
03
Automated converters ship regressions. Code that compiles isn't code that behaves the same — automated conversion tools optimize for the former.
04
Undocumented business rules block progress. The logic that matters most is usually the logic nobody wrote down.
How it works
Three layers, working together
01 · Deterministic
Deterministic analysis establishes ground truth
Our deterministic engine maps dependencies, entry points, data flows, and dead code before a single line changes — output you can trust.
02 · AI
AI coordinates context at scale
AI then applies verified migration patterns across the codebase at scale, anchored in that analysis.
03 · SME
SMEs validate before it ships
SMEs validate every deliverable, catching what automated tooling misses and making sure nothing "AI-best-effort" ships to production.
Deterministic → AI → SME
A staged engagement
01
Assessment
A snapshot of the .NET estate and a scoped plan with risks and success criteria.
02
Specification
Extracts the business rules and behavior the migration needs to preserve.
03
Modernization
Executes the migration itself, with visible progress throughout.
04
Enablement
Hands off test suites, playbooks, and training.
A workspace, not a stack of files
Every deliverable lives in one place. Yours to keep, queryable by your tools.
Delivered change
- Extracted services and APIs
- Refactored web and mobile clients
- API contracts and schemas
- One source of truth for business logic
System understanding
- Logic distribution map
- Architecture and dependency maps
- Dead-code and duplication analysis
- Critical flow documentation
- Queryable by MCP
Enablement assets
- Parity test suite
- Extraction playbooks
- Team training
- Queryable knowledge base
Proof
Validation evidence, not claims
Works with the tools you've already chosen
Methodology built and led by Swimm's founders — Oren, CEO · Gilad, CTO. Every deliverable ships with validation evidence.
Frequently asked questions
Is Swimm's .NET migration a tool or a done-for-you service?
It’s done-for-you and product-enabled — you’re buying the migrated system, delivered and validated, not software you run yourselves.
How does Swimm make sure nothing breaks in a .NET migration?
Deterministic analysis maps the system before anything changes, SMEs validate every deliverable, and you receive test plans and validation evidence at each stage — not just a promise that it works.
How is a .NET migration scoped and priced?
The Assessment stage produces a scoped plan, risks, and success criteria up front, and each subsequent stage is priced as a fixed fee — no open-ended time-and-materials risk.
What if we've already started a .NET migration in-house?
Assessment can meet you mid-flight: we take a snapshot of the current stack and modernization fit and build the plan from where you actually are, not from zero.
What does our team receive beyond migrated code?
Architecture and dependency maps, documented critical flows, test suites, playbooks, and training — everything your team needs to own the system going forward.
Your .NET migration — accurate, complete, on time
30 minutes on your .NET estate. Scope, risks, and whether staged migration fits.
Talk directly to our founders: Oren, CEO · oren@swimm.io — Gilad, CTO · gilad@swimm.io