.NET Development Services
.NET is the enterprise foundation for building and modernizing business-critical applications, integrating deeply within the Microsoft ecosystem, and scaling systems that demand performance, security, and long-term support. Whether you're building a new application or extending existing Microsoft infrastructure, .NET gives you compatibility, stability, and full control over your technology stack.
Xfinit builds on .NET and the Microsoft ecosystem to deliver solutions tailored to your operational context, from internal platforms and APIs to complex integrations that tie your enterprise systems together.
We focus on outcomes: reliable enterprise applications, seamless integration with Azure, Active Directory and Dynamics 365, enterprise-grade security, structured maintenance, and an architecture that evolves with your business.
Decision criteria
When this investment makes sense
- You have Microsoft infrastructure and want to leverage the existing ecosystem.
- You're building internal applications, enterprise platforms, APIs or business-critical integrations.
- You need stability, security, control and long-term support.
- You want a solid technical foundation for applications that must grow in complexity and scale.
Who it's right for
- Companies with Microsoft stack or enterprise requirements
- Teams developing internal systems, portals, integrations and operational platforms
- Organizations seeking a partner who understands both business and technical context
Operational pressure
Problems we solve
- Legacy or hard-to-extend applications
- Integration needs with Microsoft infrastructure and identity
- High requirements for stability, security and audit
- Lack of a partner with real experience on business-critical .NET applications
Scope
What the service includes
Web and enterprise applications
We develop portals, internal systems, back-office apps and custom platforms that fit your company's architecture and processes.
APIs and integration
We build services and integrations between applications, data and processes so information flows coherently.
Modernization and migration
We can refactor, migrate or extend existing solutions when business can't justify a total rebuild.
Microsoft ecosystem support
Where it makes sense, we align the solution with identity, databases, hosting and tools already used by your company.
Delivery
How we work
1. Context and architecture analysis
We understand what exists, what must be kept and what needs to change.
2. Solution definition
We establish architecture, integration, security and delivery strategy.
3. Build and validation
We develop incrementally and validate important capabilities on real scenarios.
4. Launch and evolution
We prepare go-live and continue with optimization, maintenance or expansion.
Outputs
What you get and what results we track
Typical deliverables
- .NET applications tailored to your context
- APIs, integrations and business-critical components
- modernization or expansion plan, where applicable
- framework for ongoing support and evolution
Results we track
- Better compatibility with existing ecosystem
- solid foundation for enterprise applications
- less integration and maintenance risk
- greater control over performance and security
Questions
Frequently asked questions
When is .NET a good choice?
Usually when there's Microsoft infrastructure, enterprise requirements and strong needs for integration, security and long-term support.
Can you take over existing .NET applications?
Yes, if there's access to code, infrastructure and enough context to correctly assess current state.
Just new development or modernization too?
Both directions can make sense. The choice depends on system condition and business goals.
Do you include integration with other systems?
Yes. Most of the time, the value comes from how the application talks to the rest of the ecosystem.
How do you handle migration from legacy .NET Framework to modern .NET?
We start with a technical audit of your existing application: dependencies, database layer, integrations. Then we define an incremental migration strategy — either a direct upgrade to .NET 8+ or modular refactoring with API wrapping, so your system stays operational throughout the transition.
Ready to get started?
Tell us about your project and we'll show you how we'd deliver it.