.NET Development Services
Microsoft's platform for business software on cloud and desktop.
.NET is Microsoft's free, open source platform for building web applications, APIs, services and desktop software, usually in C#. Our .NET development services help B2B clients build new systems and modernise older ones, including Windows and Azure environments, from a written scope and in Agile sprints.
- Engagement models
- 3
- Every project has
- A named lead
- Signed before details
- Mutual NDA
- Confirmed in the contract
- Your IP
What We Build With .NET
The platform covers web, services and desktop with one language and one set of tools.
ASP.NET Core Web Apps
Server-rendered and interactive web applications for staff and customers.
Web APIs
Interfaces that serve web, mobile and partner systems.
Line-of-Business Systems
Internal software for finance, operations, field teams and approvals.
Framework Migrations
Moving older .NET Framework applications to current .NET.
Azure-Hosted Services
Services and background workers designed to run well in the cloud.
Desktop and Windows Tools
Windows applications and services where a desktop client still makes sense.
When to Choose .NET
These are the situations where .NET is a natural fit.
-
Microsoft-centred organisations
Active Directory, Office and Azure in daily use
Your users sign in with Microsoft identities and your tools are in that world already.
- Single sign-on with existing accounts
- Integration with Microsoft services
- Hosting that matches your estate
-
Companies with .NET Framework apps
An application stuck on an older platform
It runs only on Windows servers and new libraries no longer support it.
- Assessment of what can move
- Staged migration to current .NET
- Tests before and after each stage
-
Engineering managers
More C# capacity
Your .NET team needs extra hands for a defined set of features.
- Join your repository and sprints
- Follow your coding standards
- Documented handover
.NET or Node.js for a Business Application?
Both are capable and widely used. The question is usually which skills and systems you already have.
.NET is usually the better choice when
- Your organisation already runs on Microsoft products
- You need strongly typed code across a large codebase
- You have existing C# developers or .NET systems
- Your application does substantial processing on the server
| Consideration | .NET | Node.js |
|---|---|---|
| Strong typing across the codebase | Built in with C# | Available through TypeScript |
| Microsoft and Azure integration | Closest fit and first-class tooling | Supported, with more assembly |
| Server-side processing power | Strong multi-threaded performance | Heavy work needs worker processes |
| Shared language with the frontend | Separate languages | One language end to end |
| Package ecosystem size | Large and curated | Very large and fast moving |
| Best for | Microsoft-based enterprise systems | Lightweight APIs and JavaScript-first teams |
How We Deliver Your .NET Application
Every project moves from a written scope to agreed review points, so you always know what is happening and what comes next.
Choose the .NET Version
We select a supported .NET release and decide between MVC, Razor Pages, minimal APIs or a mix.
Stack agreedPlan Structure and Identity
Solution layout, data access with Entity Framework and sign-in with your identity provider are agreed.
Reviewed designBuild in Sprints
Features are built and shown in demos at the end of each sprint, using your test environment.
Working applicationTest and Prepare
Automated tests, code analysis and release checks run before anything reaches production.
Release candidateDeploy and Hand Over
We deploy to Azure, IIS or containers as agreed, then hand over code, configuration and documentation.
Live and documented
What Affects the Cost of .NET Development
The platform itself is free, so cost mostly follows scope and the environment around it. These are the points we cover.
Application scope
Number of modules, screens and business rules is the biggest factor.
Migration from .NET Framework
Older code that depends on Windows only libraries needs analysis and rework.
Identity and access
Single sign-on, roles and directory integration add design and testing.
Integrations
Connecting to ERP, CRM and partner systems brings mapping and error handling.
Hosting and licensing
Windows servers, databases and cloud services may carry licence or running costs outside development.
Team and engagement model
The skills involved and how you engage us shape the total.
Why Build in .NET With NetOfficials
The working terms below are part of every engagement, not extras.
One Cross-Functional Team
Design, development, testing and DevOps run through a single team, so decisions stay connected.
Senior From Day One
The senior engineer who scopes your work stays involved while it is delivered.
You Own Everything
IP assignment is confirmed in the contract, and you receive the full source code and documentation at handover.
Mutual NDA
We sign a mutual NDA before you share the details of your project.
Your Working Hours
We agree a communication window that suits your time zone at the start.
Visible Progress
Work is tracked in Jira, with a demo and your feedback at the end of every sprint.
The Ecosystem Around .NET
We recommend technology for your project and your team's future, not for our convenience. Three questions guide every choice.
Will it handle your load?
We size the design for your expected users, data and growth, so it does not need rebuilding when the business grows.
Will it fit your systems?
We check how the stack connects with the tools, databases and partners you already rely on before we commit to it.
Can you support it later?
We favour well-supported technology with a wide talent pool, so your own team or any future partner can maintain it.
Technologies we work with
.NET
Azure
GraphQL
Angular
React
TypeScript
Docker
Kubernetes
AWSFlexible Ways to Work With Us
Pick the model that fits where your project is today. You can move between them as it grows.
Project Delivery
We deliver an agreed scope, timeline and price.
- Written discovery scope
- Milestone reviews
- Best for a clear first release
- For ongoing work
Dedicated Team
A team that works only on your project, led by a named delivery lead.
- Cross-functional team
- Sprint demos and planning in Jira
- Scale the team up or down
Team Extension
Specialists who join your existing team, tools and processes.
- Works in your process and tools
- Agreed overlap hours
- Best for adding a missing skill
Related Technologies and Services
Technology choices connect to services and hiring. These pages cover what people usually read next.
.NET Development Services FAQs
What is the difference between .NET and .NET Framework?
.NET Framework is the older, Windows only platform. Current .NET is cross-platform, open source and where new development happens.
Does .NET run only on Windows?
No. Current .NET runs on Windows, Linux and macOS, and applications are often deployed in Linux containers.
Can you migrate our .NET Framework application?
Usually, yes. We assess the code and its dependencies, then agree a staged migration in the written scope.
Is .NET only for large enterprises?
No. It also suits smaller internal tools and APIs, though a lighter stack may be cheaper to run for very simple products.
Do you build with ASP.NET Core?
Yes. It is the standard choice for new .NET web applications and APIs, and we confirm the exact approach in discovery.
Who owns the .NET code?
You do. IP assignment is confirmed in the contract before the build, and the full source and documentation come to you at handover.
Ready to Build With .NET?
Share a few details. A senior engineer reads every brief and replies with questions and a suggested next step.
- We review your briefAnd reply with questions
- We sign a mutual NDABefore you share the details
- You get a written scopeTeam, timeline and model, before any commitment