.NET Development Company

.NET development refers to building software applications using Microsoft’s .NET platform — a free, open-source, cross-platform framework for creating web applications, APIs, desktop software, mobile apps, microservices, and cloud-native systems. The primary language used in .NET development is C#, supported by F# for functional programming and VB.NET for legacy support. The main frameworks within .NET are ASP.NET Core (web and API), Blazor (interactive web UIs in C#), WPF and WinForms (Windows desktop), MAUI (cross-platform desktop and mobile), and Azure Functions (serverless). Modern .NET development targets .NET 8 or .NET 9, which replaced the older .NET Framework and run on Windows, Linux, and macOS.

.NET Framework (versions 1.0 to 4.8) is Windows-only and is in maintenance mode — Microsoft will not add new features to it. .NET Core (versions 1.0 to 3.1) was Microsoft’s cross-platform, open-source reimagining of .NET. .NET 5 unified .NET Framework and .NET Core into a single platform simply called ‘.NET’. .NET 6, 7, 8, and 9 continue this unified platform. .NET 8 is the current Long-Term Support (LTS) release (supported to November 2026) and is the recommended target for all new development. Applications still running on .NET Framework should be assessed for migration to .NET 8 — they are not receiving new security features and will eventually represent compliance and operational risk.

The cost of .NET application development depends on the application type, feature complexity, integration requirements, security and compliance scope, and team size. A focused ASP.NET Core Web API with authentication and documentation typically ranges from USD 20,000 to USD 60,000. A full-stack ASP.NET Core web application with a React or Blazor frontend, database, and Azure deployment typically ranges from USD 50,000 to USD 180,000. An enterprise-grade .NET platform with microservices, Azure integration, and compliance requirements ranges from USD 150,000 to USD 600,000 or more. .NET Framework to .NET 8 migration projects range from USD 30,000 for smaller codebases to USD 300,000+ for large enterprise applications. Zenkins provides detailed proposals after an initial scoping session.

ASP.NET Core is the modern, cross-platform web framework within .NET for building web applications and HTTP APIs. It replaced the older ASP.NET (which was Windows-only). ASP.NET Core runs on Windows, Linux, and macOS, and it is consistently ranked as one of the fastest web frameworks available — outperforming Java Spring Boot, Node.js, and Python Django in TechEmpower benchmarks for most workloads. ASP.NET Core should be the default choice for any new .NET web application or API. It supports MVC (Model-View-Controller), Razor Pages (page-centric), Minimal API (lightweight HTTP handlers), Blazor (C# interactive UIs), gRPC, SignalR (real-time), and WebSockets.

Migration timeline depends on codebase size, the degree of Windows-only API usage, the number of WCF services to replace, and the existing test coverage. A small .NET Framework application (under 100,000 lines of code) with limited Windows dependencies can be migrated in 8 to 16 weeks. A mid-size application (100,000 to 500,000 lines) typically takes 16 to 36 weeks. A large enterprise .NET Framework application (500,000+ lines, significant WCF usage, complex ASP.NET Web Forms) can take 36 to 72 weeks and is typically delivered in phases using a strangler fig pattern. Zenkins provides a detailed migration assessment report before any migration project begins, covering the specific incompatibilities, effort estimate, and recommended strategy.

Both. A significant portion of our .NET work involves joining existing codebases — either to extend functionality, fix performance or security problems, migrate from .NET Framework, or take over from a previous development team. When joining an existing codebase, we conduct a structured technical audit covering architecture quality, test coverage, security vulnerabilities, dependency freshness (outdated NuGet packages), performance bottlenecks, and code maintainability. We provide a findings report with prioritised recommendations before beginning any new development work on the codebase.

Yes. A significant proportion of Zenkins’s .NET work is in regulated industries. For healthcare: we build HIPAA-compliant .NET applications for US clients (data encryption, access logging, PHI minimisation, BAA-eligible Azure hosting) and NHS-aligned applications for UK healthcare clients (HL7/FHIR integration, NHS Login, NHS Digital API standards). For financial services: we implement SOC 2-aligned development practices, PCI DSS-aware payment handling, and audit trail patterns required for FCA, RBI, and SEC-regulated applications. For insurance: we have delivered .NET applications for claims management, underwriting, and policy administration with the audit and access control requirements of UK FCA and US state insurance regulators.

Yes. Zenkins serves .NET development clients in the USA, UK, Australia, Canada, UAE, Germany, Netherlands, and Singapore. Our delivery model is fully remote with structured communication — weekly sprint reviews, shared project dashboards, direct access to the technical lead, and project managers available in your time zone. The majority of our active .NET clients are international organisations that chose Zenkins to access senior .NET engineering talent at competitive rates without the quality or communication risks they had experienced with other offshore partners.

Blazor is a .NET framework for building interactive web UIs using C# instead of JavaScript. It comes in two hosting models: Blazor WebAssembly (runs entirely in the browser using WebAssembly) and Blazor Server (UI state on the server, communicated to the browser via SignalR). Blazor is a good choice when: your team is .NET/C# specialists and you want to avoid maintaining a separate JavaScript frontend stack, you are building enterprise internal tools where the development team’s skill set matters more than ecosystem breadth, or you are using Blazor Hybrid in MAUI for desktop apps that share UI logic with a web version. Blazor is not the right choice for public-facing applications where SEO is critical (Blazor WebAssembly is not SEO-friendly without server-side rendering), or when your frontend team is primarily JavaScript engineers.