.NET Development & Consulting
Custom applications, built on Microsoft .NET
We design, build, test, and support high-performing, scalable, and secure .NET applications tailored to your business — with AI built in where it pays off.
The platform
One stack for every app you run
.NET is open-source and cross-platform — one language and toolchain from the browser to the cloud, with AI building blocks built in.
Web & APIs
ASP.NET Core, Minimal APIs, and Razor for fast, secure web apps and services.
Cloud-native
Aspire, containers, Azure App Service, Functions, and Kubernetes.
Data
Entity Framework Core with SQL Server, Azure SQL, PostgreSQL, and Cosmos DB.
AI built in
Copilots, agents, and intelligent search through Microsoft.Extensions.AI and Agent Framework.
Ready to build what's next on .NET?
Talk to an XTIVIA .NET architect about your applications — no obligation, no pressure.
What we do
Optimize what you have, build what's next
Whether you're modernizing existing systems or developing new applications, we tailor each engagement to your business needs — and stay on to support your growth.
Custom Development
Web, API, and line-of-business applications in C#, built around your workflows and sized for growth.
Web Apps & APIs
Fast, secure ASP.NET Core sites, portals, and REST or gRPC APIs your other systems can rely on.
.NET 10 Modernization
Move .NET Framework apps to .NET 10 LTS — .NET 8 and 9 leave support November 2026.
Legacy Rescue
Stabilize and replace WebForms, WCF, VB6, and Perl systems without losing the business rules inside them.
Cloud-Native on Azure
Containerized .NET on Azure with Aspire, CI/CD, and observability built in from day one.
Integration
Connect .NET apps to Dynamics 365, Microsoft 365, ERPs, lab systems, and third-party APIs.
QA & Test Automation
Automated unit, integration, and regression testing so every release ships with evidence, not hope.
Support & Staffing
Experienced .NET engineers to run production, extend your team, or carry the roadmap alongside you.
Signature offering
Custom .NET applications, start to finish.
One accountable team from the first workshop to production support — so the architecture, the code, and the people who run it stay aligned.
- 01
Discover & define
Workshops with your stakeholders to map workflows, integrations, and success measures — then a costed, phased plan.
- 02
Architect
Solution architecture on ASP.NET Core and Azure: data model, APIs, security, and where AI genuinely adds value.
- 03
Build in sprints
Two-week sprints with working software at every demo, written in C# to shared code-review standards.
- 04
Test & secure
Automated unit, integration, and performance testing from our QA practice, plus security scanning before every release.
- 05
Launch & support
CI/CD deployment to Azure or on-premises, then ongoing support, enhancements, and staff augmentation as you grow.
From our engineers
Field notes & .NET delivery
A customer case study and hands-on writing from the XTIVIA engineers who build and modernize .NET applications.
Let’s Talk Today!
No obligation, no pressure. We’re easy to talk with and you might be surprised at how much you can learn about your project by speaking with our experts.
XTIVIA CORPORATE OFFICE
304 South 8th Street, Suite 201
Colorado Springs, CO 80905 USA
Additional offices in New York, New Jersey, Texas, Virginia, and Hyderabad, India.
USA toll-free: 888-685-3101, ext. 2
International: +1 719-685-3100, ext. 2
Fax: +1 719-685-3400
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