For platforms carrying more history than a rewrite can absorb
.NET Development Services
A .NET system that has run for years usually carries migration debt, query patterns nobody has revisited, and a backlog that has outgrown one engineer. This practice takes delivery ownership of that whole picture, whether the work is a framework migration, a new Azure-native build, or a platform that needs a team, not a hire.
How a .NET migration gets sequenced safely
Dependency audits, incremental migration and Entity Framework performance work.
90 secSample frame · video pending01Before choosing a migration approach
Incremental migration or a clean rewrite is a real decision.
Legacy .NET migrations fail most often from an all-or-nothing plan. Four questions settle which approach actually fits your system.
How many undocumented dependencies does the audit find?
A system riddled with undocumented framework-specific behaviour favours an incremental path, so each dependency surfaces in isolation, not all at once.
Can the business tolerate any downtime?
Zero-downtime requirements point strongly toward incremental migration. A system that can pause briefly has more options available.
Is the current architecture worth preserving?
Sound architecture on an old framework favours migrating it forward. Architecture already straining may be worth rebuilding alongside the framework change.
How much test coverage exists today?
Low coverage on legacy code makes a rewrite riskier than it looks, because nobody can confirm existing behaviour is fully preserved.
| Incremental migration | Clean rewrite | |
|---|---|---|
| Downtime risk | Low, staged in pieces | Higher, larger cutover |
| Time to first benefit | Faster, piece by piece | Slower, all at once |
| Best fit | Sound architecture, real dependencies | Architecture already straining badly |
| Risk profile | Contained per stage | Concentrated at cutover |
02Agreed before the migration starts
The ledger that keeps a .NET engagement honest
.NET engagements go wrong when a dependency nobody knew about surfaces mid-migration and stalls everything. This ledger names what you bring, what we build, what returns, and what stays yours.
- Your side
You bring
- The existing .NET Framework application and its dependencies
- Every integration currently depending on the old runtime
- Constraints on downtime during the migration
- Our side
We build
- A dependency and API audit before any migration plan is written
- An incremental migration path to modern .NET rather than a hard cutover
- Entity Framework and data access modernised alongside the runtime
- Your side
You receive
- A system running on current .NET with a supported path forward
- A migration record documenting every dependency handled
- Confidence to keep upgrading without another audit from scratch
Never leaves you
- The pace of the migration and its business priorities
- Every commercial decision tied to the application
- The relationship with every user or integrator of the system
Where the line sitsMigration risk concentrates in what the audit has not yet found. We surface dependencies before writing a migration plan, not after.
03From audit to a modern platform
Four stages, each closing on evidence
.NET migrations that stall usually skipped a stage here. This system closes each one with something your engineers can verify before the next stage begins.
Audit dependencies before planning the migration
Every framework-specific dependency and integration is inventoried first, because migration risk concentrates in exactly what the audit has not yet found.
Dependencies found before they cause a delaySequence the migration around your constraints
The migration is staged against downtime tolerance and business priorities, so each piece delivers value before the next begins.
A path staged around real constraintsFix query performance during the migration
Entity Framework query patterns are reviewed and rebuilt where they are genuinely slow, rather than carried forward unexamined into the new platform.
Entity Framework rebuilt where it actually hurtsHand over a platform your engineers recognise
The modernised system is handed over with documentation and Azure deployment access your own engineers can operate without depending on us.
A platform your team can operate
04What actually moves the number
Four drivers, priced from the platform
.NET work is priced against the platform's age and complexity, because these four factors change scope by multiples.
Number of undocumented dependencies found
A well-documented system costs less to migrate than one where dependencies must be discovered from the code itself first.
Entity Framework performance debt
A platform with years of unexamined query patterns costs more to fix than one already reasonably well tuned.
Azure infrastructure maturity
An existing, well-structured Azure setup costs less to build against than infrastructure that needs redesigning alongside the application.
Team size and delivery cadence required
A platform needing both migration and ongoing feature delivery costs more than a bounded, one-time migration project.
05Evidence and proof
Platforms modernised without a cutover weekend.
.NET delivery proof is a migration that held under real dependencies and a performance backlog that actually cleared. Every record here waits for written client approval before production.
Explore case studiesA decade-old .NET Framework system moved to current .NET without a cutover weekend.
Nexa Foundry's core system had run on the old framework for over a decade. An incremental migration moved it to current .NET across staged releases, with no cutover weekend and no unplanned downtime.
- Unplanned downtime
- None across the migration
- Dependencies audited before migration
- Full inventory
A delivery team cleared an Entity Framework performance backlog while shipping new features.
Vela Ledger's platform had a growing feature backlog alongside worsening Entity Framework query performance. A delivery team carried both in parallel instead of pausing features to fix performance.
- Page load time on worst offenders
- Cut by over 80%
- Feature delivery paused for performance work
- None
They found dependencies in our old system that our own engineers had genuinely forgotten existed.
Sample · pending client approval
06Read this first
When a commissioned .NET team is the wrong fit
Commissioning a delivery team for a single, well-scoped fix spends more than the fix actually needs. The exits are marked plainly. Where this is justified, delivery runs on .NET, ASP.NET Core, Entity Framework and Azure.
- Hire .NET Developers
You need one named engineer, not a delivery team
If your leads already run delivery and just need added capacity, a single hired .NET engineer inside your process fits better.
- Software architecture
The question is architectural, not a build yet
If the decision is whether the current .NET architecture can even scale, a review answers that before a delivery team gets committed.
- Application development
The platform's shape has not been decided yet
If the build is not yet clearly a .NET platform decision, that broader question belongs on the generalist application page first.
| Shape | Best when | You direct | We carry |
|---|---|---|---|
| Scoped migration | The legacy scope is bounded and known | Priorities and acceptance | Migration and delivery |
| Delivery pod | Migration and features run in parallel | Product decisions each cycle | Engineering, testing, releases |
| Named engineer | Your leads run delivery and need capacity | Architecture and standards | One engineer inside your process |
07Straight answers
Asked before a .NET delivery engagement is scoped.
01What's included when ValueCoders delivers a .NET engagement?
A commissioned team that owns migration or platform delivery outright, including architecture, engineering, testing and release, rather than one engineer joining your own team.
02How is this different from hiring a .NET developer?
Hiring places one named engineer inside your process, under your direction. This practice takes delivery ownership of the outcome itself, with a team accountable for it.
03Can you migrate from .NET Framework without downtime?
In most cases, yes. An incremental migration staged around your specific constraints usually avoids a hard cutover, though the audit confirms this for your system specifically.
04Do you fix Entity Framework performance as part of delivery?
Yes, query performance is reviewed as standard practice during any .NET engagement, since it is one of the more common sources of platform slowdown over time.
05What does a .NET delivery engagement cost?
Priced against dependency count, performance debt and Azure infrastructure maturity from the assessment. A well-documented system costs less than one requiring discovery first.
06Do you deploy on Azure specifically, or other clouds too?
Azure-native deployment is a core strength here, matched to teams already standardised on it. Other cloud targets are handled where the platform specifically calls for it.
07Can the delivery team also ship new features during a migration?
Yes, many engagements run migration and feature delivery in parallel, since pausing a product's roadmap for the length of a migration is rarely realistic.
08What if we only need one extra .NET engineer, not a full team?
That is a staffing decision rather than a delivery engagement, and the hiring practice handles it directly with a published evaluation and a standing bench.