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.Net

.NET Development Services for Enterprise Applications That Hold Up in Production

We build, modernize and support .NET applications in C# and ASP.NET Core, from greenfield platforms to .NET Framework estates that cannot afford downtime. Senior engineers only, working inside your sprints, so the hard part is the migration plan rather than onboarding.

200+ enterprises transformed
500+ domain trained professionals
US & India delivery centres
TYPICAL TARGET ARCHITECTURE
ASP.NET Core 10
API + web
EF Core 10 + Azure SQL
Data layer
Azure Container Apps
Runtime + scale
Semantic Kernel + Azure OpenAI
AI layer
Trusted by enterprise clients who demand real-world impact
IS .NET RIGHT FOR YOU

Where .NET Is the Right Choice, and Where It Isn't

.NET development services cover the design, build, modernization and support of applications on Microsoft’s .NET platform, using C# with ASP.NET Core, Blazor, EF Core and Azure. Most enterprise work falls into three buckets: new applications, moving .NET Framework code to current .NET, and adding capability to systems already in production.

Choose .NET when

✓  You already run on Microsoft infrastructure. Active Directory, SQL Server and Azure are already in place, and your operations team knows them. Building in .NET keeps identity, deployment and monitoring inside one support boundary instead of adding a second one.

 You have a .NET Framework estate that still makes money. Rewrites of working systems fail more often than they succeed. Current .NET gives you a route that moves the application one slice at a time, with the old and new stacks running side by side.

✓  Throughput and hosting cost drive the architecture. .NET handles high request volumes on modest hardware, and ahead-of-time compilation cuts container start time and memory. That difference shows up on your cloud bill, not in a benchmark.

✓  The application has to survive an audit. Regulated workloads need a predictable support window, patched runtimes and traceable dependencies. A November release cadence and three years of support on long term releases make that planning boring, which is the point.

Where we'd tell you not to

> Model training and data science sit at the center of the work. ML.NET is fine for scoring a model inside an application. If the job is notebooks, feature engineering and experiment tracking, the ecosystem lives in Python, so we would put Python engineers on it and call into .NET from there.

> You need very small, fast-starting services at high concurrency. For network-heavy infrastructure components where a single binary and a tiny memory footprint matter more than framework depth, Go engineers are the better answer, and we will say so before you sign anything.

> Mobile is the product, not a channel. .NET MAUI works for an internal app that mirrors a web tool. If the mobile experience is what customers actually pay for, Flutter engineers get you further per sprint.

WHAT WE BUILD

Our .Net Development Services

Six ways enterprise teams engage us as a custom .NET development company, each with the stack we’d actually reach for on that kind of work.

Custom .NET Application Development Services

Greenfield line-of-business systems and customer platforms, built in C# on ASP.NET Core with a domain model you can still read in year three. Our custom .NET development services include the architecture decisions, not just the sprints that follow them.

ASP.NET Core 10, C# 14, Blazor, EF Core 10, .NET Aspire

Legacy .NET Modernization and Migration

We move .NET Framework applications onto .NET 10 in slices, with a reverse proxy routing traffic between old and new while both run. Our application modernization services start with a dependency map, because System.Web and WCF decide the sequence.

.NET Framework 4.8, .NET Upgrade Assistant, YARP, System.Web adapters, .NET 10 LTS

.NET Core Development Services for the Cloud

Containerized ASP.NET Core services on Azure Container Apps or AKS, with health probes, structured logging and autoscaling configured before launch rather than after the first incident. We run the same pattern on AWS and Google Cloud through our enterprise cloud solutions practice.

Azure Container Apps, AKS, Azure Functions, Dapr, Azure SQL Hyperscale

ASP.NET Development Services for Web Apps and APIs

Minimal APIs, gRPC and message-driven integration across ERP, CRM and payment systems. Our custom ASP.NET development services cover the contract, the retry behavior and the observability, because integration failures are rarely about the endpoint itself.

Minimal APIs, gRPC, Azure Service Bus, MassTransit, Microsoft.AspNetCore.OpenApi

Quality Engineering, DevOps and Ongoing Support

xUnit and Playwright suites that run on every pull request, pipelines in Azure DevOps or GitHub Actions, and OpenTelemetry wired into the application rather than bolted on afterward. Canary releases with rollback, so a bad deploy stays boring.

xUnit, Playwright, Azure DevOps, GitHub Actions, OpenTelemetry

Applied AI Inside .NET Applications

Retrieval, summarization and agent workflows added to systems already in production, using Microsoft.Extensions.AI and Semantic Kernel against Azure OpenAI. Evaluation harness first, because an AI feature nobody can measure does not belong in a regulated workflow.

Microsoft.Extensions.AI, Semantic Kernel, Azure OpenAI, ML.NET, Azure AI Search
PROOF

Our .NET and Enterprise Modernization Work

Three engagements with numbers attached. Every card leads with the outcome, not the technology.

100+

Institutional tenants supported with scholarship operations across every release.

EdTech · SaaS platform engineering and modernization

Modernizing a Multi-Tenant SaaS Scholarship Platform

We ran a .NET 8 and Angular 18 stack side by side with the legacy AngularJS layer, expanded role-based access control, and shipped the Funds module without breaking scholarship workflows.

Read the case study →

100%

Uninterrupted API migration completed without production incidents, preserving business continuity across all active workflows.

Enterprise software · legacy modernization

Modernizing a Legacy ExtJS Application with API Migration

We refactored data-heavy grids and forms, then moved the frontend onto realigned backend API contracts in stages, so business-critical workflows kept running throughout.

Read the case study →

45%

Reduction in loan processing time, with 50% faster onboarding, after moving to a cloud-native lending platform.

Financial services · digital transformation

Transforming Lending Operations for a Financial Services Provider

We built a loan origination and approval engine with automated rule checks, integrated third-party verification data, and migrated the workflows onto a secure cloud platform with full audit trails.

Read the case study →
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ENGAGEMENT & COST

How You Engage Us, and What Drives the Cost

Three commercial shapes, and an honest account of what moves the number. You shouldn't have to fill in a form to learn how a partner charges.
WHAT ACTUALLY MOVES THE NUMBER
Seniority mix
An architect-heavy team costs more per month and usually less overall. The wrong mix shows up as rework, not as an invoice line.
Scope certainty
Fixed price needs fixed scope. Where the requirement is still moving, time and materials beats the contingency a fixed bid has to carry.
Compliance requirements
Regulated environments add evidence, review cycles and audit trails. That is real work, and it belongs in the estimate rather than in a surprise.
Integration surface
The number of systems you must talk to predicts effort better than feature count. Ten integrations is a different project from two.
Looking to hire
.Net
developers for your own team instead?
HOW WE DELIVER

Our Enterprise-Ready Delivery Framework

The same five steps on every engagement.
STEP 01
Contextual Readiness
Ready-to-deploy solutions for your environment. We map the existing estate, its dependencies and its constraints before proposing anything.
STEP 02
Seamless Vendor Onboarding
Rapid integration with existing vendor ecosystems. Access, environments, security review and ways of working, handled so engineering time isn't spent on procurement.
STEP 03
Platform-Agnostic Engineering
Works across any technology stack. We build on the stack that earns its place. We won't force a technology decision to suit our bench.
STEP 04
Flexible Engagement Model
Scalable team structures to your needs. The commercial shape can change as the work does, without renegotiating the relationship.
STEP 05
Hybrid Global Delivery
Onshore, nearshore and offshore delivery, with overlap hours that make standups worth attending.
WHEN WE'RE STAFFING A TEAM
Curated profiles · 24 to 48 hrs
Onboard & kickoff · 48 to 72 hrs
Our published staffing SLAs, from the point a requirement is agreed. You interview the engineers before committing.
HOW IT RUNS IN PRACTICE
Two-week sprints, demoable increments, a backlog your product owner controls
Peer review on every change and quality gates that block rather than warn
Canary and blue-green releases with rollback, so a bad deploy is a non-event
TRUST

Built on Trust. Proven in Delivery.

200+
Enterprises Transformed
150+
AI Projects Delivered
$500M+
Business Value Generated
500+
Domain Trained Professionals
We have been working with Entrans for the last two years and they have played a key role in building our solution. Their expertise and professionalism were evident throughout the development cycle, and we were very pleased with the final product.
Nikolay Prokopiev
Chief Executive Officer
Entrans has been a trusted outsourced product development partner for 2 years now, providing a pool of good quality software engineers to tap into. Their team has a strong customer first orientation, is open to feedback and is a pleasure to work with.
Subramanian Visvanathan
Chief Executive Officer
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FAQS

.NET Development FAQs

Still have a question?
Ask a senior engineer directly. We reply within one business day.
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What is the difference between .NET Framework, .NET Core and .NET 10, and which should we build on?

Build anything new on .NET 10. .NET Framework 4.8 is Windows-only and now receives security and reliability fixes rather than new capability, .NET Core was the cross-platform rewrite that ended at version 3.1, and everything from .NET 5 onward is one unified platform with a single runtime. .NET 10 is the current long term support release and is supported until November 2028, while .NET 8 support ends in November 2026. Vendors list the same work as dot net development services, .NET software development services or asp.net development services, so ask which runtime version a proposal actually targets.

Can you migrate our .NET Framework application without taking it offline?

Yes, and in most enterprise estates an incremental migration is the only workable path. We put a reverse proxy in front of the running application and move routes onto .NET 10 one slice at a time, using the System.Web adapters so both stacks can share session and authentication during the transition. The .NET Upgrade Assistant handles project files and package retargeting; the real work is untangling System.Web dependencies, WCF services and anything bound to Windows-only APIs. We have kept a modern .NET stack live beside its legacy layer for the full length of a migration on a multi-tenant SaaS platform.

How much do .NET development services cost?

There is no single rate, because the same feature costs very different amounts depending on how many systems it has to talk to. Most .NET development companies will not publish a number, and a figure on a landing page would be fiction anyway. Comparing vendors on hourly rate alone is the most common estimating mistake we see, since the cheapest quote usually carries the largest contingency and that surfaces later as change requests. Ask any partner to scope and price the first slice of work rather than the whole program.

Is .NET still a safe platform choice for a new enterprise application in 2026?

Yes. Microsoft ships a major .NET release every November and alternates long term support and standard term support versions, so you can plan against a three year support window instead of guessing. .NET runs on Linux and in containers rather than only on Windows Server, and the same runtime covers web APIs, background services, desktop and mobile. The practical risk is not the platform, it is staying on a version past its support date, which is exactly how .NET Framework estates became expensive to own.

Does .NET work with our non-Microsoft systems?

Yes. .NET runs on Linux, in Docker and on Kubernetes, and deploys to AWS and Google Cloud as readily as to Azure. Entity Framework Core has supported providers for PostgreSQL, MySQL, Oracle and SQLite for years, so SQL Server is a choice rather than a requirement. Talking to Java, Python or Node services uses the same integration surface as anywhere else: REST, gRPC, GraphQL, or a broker such as Kafka or RabbitMQ. The honest constraint is older .NET Framework code, which stays tied to Windows until it moves to current .NET.

NEXT STEP

Start your .NET project brief

Tell us the shape of the problem. A senior engineer reads it and replies. You won't get a templated capability deck.

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Every engineer signs an NDA before day one
You own the code from the first commit
You interview the engineers before committing