# .NET development for reliable business applications

> APPSOLN builds and modernises .NET applications and APIs in C# and ASP.NET Core, for businesses that run on Microsoft technology.

.NET is Microsoft's platform for building business software, usually written in the C# language. Many companies run their core systems on it, and modern .NET works well in the cloud.

## For small businesses

A small business might use .NET if its existing software or accounting tools are Microsoft-based, or to build a reliable internal system.

## For larger companies

A large company might use .NET for core business systems, APIs, and integrations, often hosted on Microsoft Azure, or to modernise older .NET Framework apps.

## What we do

- Build new applications and APIs with ASP.NET Core
- Modernise older .NET Framework apps to current .NET
- Connect .NET systems to web front ends, CRMs, and ERPs
- Move .NET apps to Azure or AWS
- Maintain and improve existing C# code

## A good fit for

- Businesses already using Microsoft tools and Azure
- Older .NET systems that need updating
- Business systems that need long-term stability

## Works well with

- C#
- ASP.NET Core
- SQL Server
- PostgreSQL
- Azure
- React

## Common questions

### Can you update our old .NET Framework application?

Yes. We plan the upgrade in stages, so the system keeps running while it is moved to modern .NET, and can then move to the cloud if you want.

### Can .NET work with a modern web front end?

Yes. A .NET API pairs well with a React or Next.js front end.

## Related

- [Full-Stack Development](https://appsoln.com/services/full-stack-development/index.md): Need a web app, customer portal, or internal tool that fits how your business works? APPSOLN builds it end to end, connects it to the tools you already use, and hands it over ready to launch.
- [Hire a .NET Developer](https://appsoln.com/hire/dotnet-developer/index.md): Hire APPSOLN as your .NET developer to build ASP.NET Core applications and APIs in C#, or to modernise older .NET systems and move them to the cloud.
- [Hire a Full-Stack Developer](https://appsoln.com/hire/full-stack-developer/index.md): Hire APPSOLN as your full-stack developer. We build the screens, the back end, the database, and the connections to your tools, then test, launch, and host it.

Canonical page: https://appsoln.com/technologies/dotnet