Legacy System Modernization: Strategies and Best Practices
Legacy system modernization guide. Strangler fig pattern, replatforming, rebuild strategies with cost comparison table, budget planning and implementation best practices.
C# and .NET Development Services
- 10+ .NET projects
- 6+ .NET engineers
- 10+ years with .NET
Key facts:
Pharos Production delivers C#/.NET enterprise applications including Azure-based cloud services, desktop applications and API backends. .NET 8 with AOT compilation for microservices. 6+ .NET engineers. Last reviewed: July 2026. Editorial policy.
What is C# and .NET development?
C# is a modern, statically typed programming language developed by Microsoft that runs on the cross-platform .NET runtime. C# and .NET power enterprise systems at Stack Overflow, Unity (60%+ of all games), Accenture, UBS and thousands of Fortune 500 companies. .NET development includes enterprise web applications with ASP.NET Core, RESTful and gRPC APIs, microservices with minimal APIs, desktop applications (WPF, MAUI), cloud-native services on Azure, game development with Unity and cross-platform mobile apps with .NET MAUI. .NET 8+ delivers AOT compilation, minimal APIs, Blazor for full-stack C# and native performance rivaling Go and Rust.
What we build with C# and .NET Development
Enterprise web applications
Large-scale business applications with ASP.NET Core featuring identity management, role-based authorization, multi-tenancy, audit logging and integration with Active Directory and Azure AD.
FinTech and banking platforms
Trading platforms, payment processing engines, regulatory reporting systems and portfolio management applications with strict type safety, transaction isolation and PCI DSS compliance.
Cloud-native Azure services
Microservices deployed on Azure Kubernetes Service, serverless functions with Azure Functions, message-driven architectures with Azure Service Bus and data pipelines with Azure Data Factory.
Insurance and government systems
Policy management, claims processing, citizen portals and document management systems with complex business rules, workflow engines and regulatory compliance requirements.
Game development with Unity
Mobile, desktop and VR/AR games built with Unity and C# scripting, including multiplayer networking, asset pipelines, in-app purchases and analytics integration.
Desktop and cross-platform applications
Windows desktop apps with WPF, cross-platform mobile and desktop apps with .NET MAUI and Blazor WebAssembly for full-stack C# in the browser without JavaScript.
C#/.NET vs Java vs Go for enterprise development
| Factor | C# / .NET | Java / Go |
|---|---|---|
| Language features | LINQ, async/await, pattern matching, records, nullable refs | Java: catching up (21+). Go: minimal by design |
| Cloud integration | First-class Azure integration, AWS SDK support | Java: AWS/Azure SDKs. Go: all cloud SDKs |
| Performance | AOT compilation, Span<T>, SIMD - near-native speed | Java: JIT + GraalVM. Go: compiled, fast by default |
| Cross-platform | .NET 8 runs on Windows, Linux, macOS, WASM | Java: JVM everywhere. Go: compiles to any OS |
| Web framework | ASP.NET Core (top TechEmpower benchmarks) | Java: Spring Boot. Go: standard library, Gin |
| Desktop/Mobile | .NET MAUI, WPF, Unity (games) | Java: JavaFX, Android. Go: no mature GUI |
| Hiring pool | Large in enterprise, Microsoft-stack companies | Java: largest enterprise pool. Go: growing, smaller |
Pharos Production recommends C#/.NET for teams invested in the Microsoft ecosystem, Azure cloud, enterprise applications requiring strong type safety and projects needing desktop or game development alongside web services. Java suits organizations with existing JVM infrastructure. Go is ideal for high-concurrency microservices with minimal resource footprint.
Limitations: C# is not the best choice for data science and ML workflows (Python dominates with NumPy, pandas, PyTorch), lightweight scripts and automation (Python or Bash are simpler), front-end web development (JavaScript/TypeScript own the browser) or teams without Microsoft ecosystem experience where the Azure-centric tooling adds unnecessary complexity.
C#/.NET Development Benchmark 2026
Proprietary research based on 30+ .NET projects delivered by Pharos Production between 2015 and 2026. Dataset covers enterprise platforms, Azure cloud services, API back ends and desktop applications. Methodology (Pharos Verified Delivery): aggregated delivery metrics with Application Insights monitoring across deployments. Full report available on request.
11 weeks
Average time to MVP for .NET enterprise applications
99.95%
Average uptime across production .NET deployments
< 35ms
Average API response time with ASP.NET Core minimal APIs
$50K-$420K+
Project cost range depending on scope and Azure services
30+
.NET enterprise projects delivered since 2015
50%
Average memory reduction with .NET 8 AOT vs JVM
C# and .NET Development projects we delivered
Key takeaways
- C# and .NET power enterprise applications at thousands of Fortune 500 companies, with ASP.NET Core consistently ranking in the top 5 of TechEmpower framework benchmarks for raw performance.
- .NET 8 AOT compilation produces native binaries with sub-10ms startup times and 50-70% lower memory usage, making C# competitive with Go for containerized microservices.
- Blazor enables full-stack C# development - server-rendered and WebAssembly modes - eliminating the need for JavaScript in many enterprise web applications.
- Pharos Production has delivered 30+ .NET enterprise projects across FinTech, insurance, healthcare and government since 2015.
- A C#/.NET enterprise application MVP typically takes 10-14 weeks and starts from $50,000 depending on complexity, Azure integration and compliance requirements.
Limitations and considerations
- The .NET ecosystem is heavily Microsoft-centric - while technically cross-platform, the best tooling (Visual Studio, Azure DevOps, Application Insights) and tightest integrations favor Azure, creating vendor lock-in risk for organizations committed to AWS or GCP.
- Blazor Server requires a persistent SignalR connection per user, consuming server memory and making it unsuitable for public-facing applications with thousands of concurrent anonymous users.
- .NET MAUI for cross-platform mobile development is less mature than Flutter or React Native - smaller community, fewer third-party packages and slower iteration cycles mean mobile-first projects may face friction.
- C# language complexity has grown significantly - nullable reference types, pattern matching, records, primary constructors and source generators create a steep learning curve for junior developers joining enterprise teams.
C#/.NET glossary 7
- CLR
- The Common Language Runtime, the execution engine of .NET that handles memory management through garbage collection, JIT compilation of IL code, type safety enforcement and exception handling.
- ASP.NET Core
- Microsoft's cross-platform, high-performance web framework for building HTTP APIs, Razor Pages and gRPC services, built on a middleware pipeline and hosted via Kestrel or IIS.
- Entity Framework Core
- Microsoft's ORM for .NET that maps C# classes to relational database tables, generates SQL from LINQ queries and manages schema evolution through code-first migrations.
- async/await
- C# language keywords that enable non-blocking asynchronous code using the Task-based Asynchronous Pattern, allowing threads to be released during I/O waits without callback nesting.
- LINQ
- Language Integrated Query, a C# feature that provides strongly typed query operators for filtering, projecting, grouping and joining in-memory collections and database data sources using a unified syntax.
- NuGet
- The package manager for .NET that hosts and distributes reusable libraries as versioned packages, integrated into MSBuild and the dotnet CLI for dependency resolution and restore.
- Blazor
- A .NET framework for building interactive browser UIs in C# using WebAssembly or server-side rendering over SignalR, sharing code between client and server without writing JavaScript.
Frequently asked questions
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No. .NET 8 is fully cross-platform and runs on Windows, Linux, macOS and WebAssembly. ASP.NET Core applications deploy on Linux containers, AWS, GCP and Azure equally well. The Windows-only perception is outdated since .NET Core 3.1 (2019).
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We use .NET 8 (LTS) with ASP.NET Core for all new projects. For enterprise applications requiring specific Azure integrations, we use the latest LTS release with minimal APIs for microservices and Blazor for interactive web UIs.
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A .NET MVP takes 10-14 weeks depending on complexity. A full enterprise platform with microservices, Azure integration, identity management and compliance features typically takes 5-10 months.
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Yes. ASP.NET Core with minimal APIs is one of the fastest web frameworks available. .NET Aspire simplifies distributed application development with service discovery, health checks and telemetry. Azure Kubernetes Service provides auto-scaling and self-healing deployment.
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.NET MVPs start from $50,000-$100,000. Enterprise platforms with Azure cloud services, microservices and compliance requirements range from $150,000 to $420,000+.
We provide detailed estimates within 48 hours.
Reviews
Independent reviews from Clutch, GoodFirms and Google - verified client feedback on our software projects
Based on 323 verified client reviews
Social
Pharos Production Inc.'s dedicated efforts led to a remarkable 95% increase in tracking accuracy for the client. The team used Jira, Trello, and Zoom to communicate and manage the project. Their technical knowledge was a hallmark of their work.
Choose your cooperation model
Pharos Production works in three engagement models, from a focused PoC to a production MVP to a full enterprise platform, with typical budgets from $10,000 to $400,000+ depending on scope and complexity.
PoC
Proof of concept
Focused validation of your riskiest technical assumption with a working spike and a clear build-or-pivot recommendation.
$10,000 - $29,000
Popular choice
MVP
MVP build
Production-ready first version with core flows, real backend and the integrations to onboard first paying users.
$55,000 - $160,000
Enterprise
Enterprise platform
Full-scale build with architecture, DevOps, QA, security and long-term evolution.
$160,000 - $420,000+
Prices vary based on project scope, complexity, timeline and requirements. Hourly rates range from $35 to $75 depending on role and seniority. Contact us for a personalized estimate.
An approach to the development cycle
The Pharos Delivery Framework divides every project into 2-week sprints. After each sprint we hold a retrospective, deliver a progress report and plan the next sprint. This methodology is why agile projects are 3x more likely to succeed than waterfall (Standish Group CHAOS Report, 2024).
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Team Assembly
Our company starts and assembles an entire project specialists with the perfect blend of skills and experience to start the work.
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MVP
We'll design, build and launch your MVP, ensuring it meets the core requirements of your software solution.
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Production
We'll create a complete software solution that is custom-made to meet your exact specifications.
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Ongoing
Continuous Support
Our company will be right there with you, keeping your software solution running smoothly, fixing issues and rolling out updates.
Trusted & Certified
Partnerships and awards
Recognized on Clutch, GoodFirms and The Manifest for software engineering excellence
20+ industry awards
C# and .NET engineering insights
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Build with C# and .NET Development
90+ engineers ready to deliver your C# and .NET Development project on time and within budget
What happens next?
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Contact us
Contact us today to discuss your project. We're ready to review your request promptly and guide you on the best next steps for collaboration
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Plan the Goals
After we chat about your goals and needs, we'll craft a comprehensive proposal detailing the project scope, team, timeline and budget
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Finalize the Details
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Sign the Contract
As soon as the contract is signed, our dedicated team will jump into action on your project!
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Our offices
Headquarters in Las Vegas, Nevada. Engineering office in Kyiv, Ukraine.
We also work with clients through dedicated local teams in Las Vegas, New York and San Francisco.