.NET Migration · Durham
.NET Migration in Durham
Migrating Durham applications from .NET Framework to modern .NET, where the first task is finding what has no successor. Several Framework technologies were not carried forward — server-side WCF, Web Forms, remoting — so an application built on one of those is facing a redesign of that layer rather than a port of it.
Why this comes up
The problem
The migration was estimated as a port, and a third of the application is built on a technology that no longer exists.
What you get
What we deliver
- Technologies without a direct successor identified before anything is estimated
- Replacement approach chosen for each, since the alternatives differ substantially
- Incremental migration behind a proxy where the application is too large to move at once
- Dependencies assessed for modern .NET support, including transitive ones
- Configuration and hosting reworked, as the models differ meaningfully
- Behaviour captured as tests before the layers producing it are replaced
Want this scoped for your business in Durham?
Thirty minutes, no charge, no sales script. You leave with a written summary of what .net migration would actually involve — whether or not you use us.
Working in Durham
North East
Durham's economy is dominated by its university and cathedral, so the commercial base is small and much of the local demand comes from spinouts and suppliers attached to the institutions rather than from independent industry.
Research spinout software and visitor systems, usually on institutional procurement timelines rather than commercial ones.
Sectors we work with in Durham
- Higher Education
- Tourism & Heritage
- Public Sector
- Retail
- Research
What we work with
Technologies and platforms
- .NET
- C#
- ASP.NET Core
- YARP
Who we work with
Industries we serve
- Financial services
- Manufacturing
- Public sector
- Healthcare
- Enterprise software
Why us
Why Durham businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in Durham
Looking for the full picture? See our .NET Migration services, everything we do in Durham or browse everything we do.
.NET Migration in Durham — common questions
- What genuinely does not port?
- Server-side WCF, Web Forms and remoting are the main ones. Clients and alternatives exist for some, and the honest position is that these represent a redesign of that layer — which is why finding them early matters more than any other assessment step.
- Can a large application move incrementally?
- Yes, by routing traffic through a proxy that sends migrated paths to the new application and everything else to the old one. Each release moves a section, both run together, and the migration proceeds without a single high-risk cutover.
- How do we handle dependencies?
- Audit them including transitively, because one unsupported package deep in the graph can block everything above it. Most widely used libraries have moved; the ones that have not are usually internal or long abandoned, and both need a decision.
- Is it worth doing at all?
- For an application under active development, generally yes — performance, hosting options and access to current tooling. For a stable system nobody is changing, the Framework remains supported and the migration may be effort spent for benefits nobody will use.
- Do you work with businesses across County Durham?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout North East, including Durham and the surrounding County Durham area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Durham businesses do you usually work with?
- Research spinout software and visitor systems, usually on institutional procurement timelines rather than commercial ones. Beyond that we work across Higher Education, Tourism & Heritage, Public Sector, Retail and Research.
- Do you cover the areas around Durham?
- Yes — we work throughout North East, including Newcastle, Sunderland, York. Durham is an urban area of roughly 70,000+, and we take on work across the wider County Durham region rather than the city boundary alone.
Talk to us about .NET Migration in Durham
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise