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Core Microsoft services · .NET application services

The .NET estate, kept running and moved forward.

ASP.NET, C#, Web API and the integration layer, supported by the same engineers month after month and modernised without a big-bang rewrite.

Why it matters

We know the versions you actually run.

Most .NET estates are Framework 4.x Web Forms and WCF with a decade of customisation and an integration hub nobody documented. We read the code that exists, keep it running while we modernise it, and leave tests, documentation and a release path your team owns.

Support, maintain, modernize.

01 · Support

  • Incident, problem and change against agreed SLAs
  • ASP.NET, WCF, Web API, Windows services, middleware, message queues and batch jobs
  • Root cause, written fix, regression test, same engineers every month

02 · Maintain

  • Release management and regression testing on every deployment
  • Security patching and NuGet dependency hygiene
  • Profiling, capacity, tests and documentation on the paths that matter

03 · Modernize

  • .NET Framework to .NET 8, assessed and staged
  • Monolith decomposition, API-first re-platforming, modern web and Blazor front ends
  • AI-assisted code archaeology and test generation

Depth signals

Two decades of .NET, including the parts nobody wants to touch.

Eras we cover

  • .NET Framework 4.x
  • WCF and Web Forms
  • ASP.NET MVC
  • .NET Core 3.1
  • .NET 6
  • .NET 8
  • C#
  • Blazor
  • Web API

Integrations

  • SQL Server
  • Azure Service Bus
  • BizTalk and MSMQ
  • Dynamics 365
  • SharePoint
  • Entra ID
  • REST and SOAP
  • Azure App Service and AKS

Engineers

Senior C# engineers, ten-plus years across Framework and modern .NET, onshore, nearshore and offshore.

Our bench: Atlasilo

Integration hub, .NET Framework 4.6 to .NET 8Illustrative Forty-plus interfaces upgraded in stages with generated tests as the safety net and no downtime on the interfaces the ERP depends on.

Typical engagements.

  • Annuity AMS transition Taken over from an incumbent or internal team: SLAs, a runbook and a named service lead.
  • Fixed-fee .NET Framework upgrade assessment Every application, its dependencies and risk, staged to .NET 8 with a price to deliver.
  • Outcome-based Monolith decomposition One application into services, priced against release frequency or incident volume you already report.
How we engage

AI on top

Tested APIs and documented integrations are what copilots and agents safely call: same interfaces, same identity, same release path.

Let's connect

Bring us the problem AI keeps almost solving.

A 30-minute call with the people who'd do the work. We'll pressure-test the opportunity, show you what good looks like, and tell you plainly whether it's worth building.

We reply within one business day.

Book a call