# .NET Development Services and C# Engineers | SynconAI > .NET development: ASP.NET Core apps and APIs, Blazor, Azure services, upgrades to .NET 10 before .NET 8 and 9 support ends, and C# engineers for your team. Publisher: SynconAI Canonical HTML: https://synconai.com/dotnet-development Markdown cite: https://synconai.com/dotnet-development.md Contact: contact@synconai.com ยท +61 2 7813 0221 ## What is .NET development? .NET development is the design, build and support of applications on the Microsoft .NET platform, usually in C# with ASP.NET Core. SynconAI builds enterprise web apps and APIs, Blazor front ends, Azure services and background workers, upgrades .NET Framework and older .NET versions to .NET 10, and supplies C# engineers who join client teams, for organizations in the United States, Australia and worldwide. - .NET is the Microsoft platform for building web, desktop, cloud and mobile applications in C#. - We build ASP.NET Core apps and APIs, Blazor front ends and Azure services, and upgrade older .NET versions. - Work runs as a fixed-scope project, a dedicated team or C# engineers who join your team. ## .NET development services - ASP.NET Core applications: Enterprise web apps built with tests and CI from the start. - Web APIs: REST APIs for front ends, mobile apps and partners, secured and documented. - Blazor front ends: Interactive web front ends written in C# alongside your back end. - Azure services and workers: Background workers, queues and cloud services on Azure. - .NET upgrades: .NET 6, 8 and 9 moved to .NET 10, and .NET Framework ported. - Web Forms and WCF replacement: Old Web Forms pages and WCF services rebuilt on ASP.NET Core. - Salesforce integration: .NET services that exchange data with Salesforce over its APIs. - .NET team extension: C# engineers who join your team and work in your process. ## Where are you with .NET? Question: What does your .NET work look like today? - Nothing built yet: A new .NET build. You need a new web app, API or internal system on Microsoft technology. - Started on .NET 10, the current LTS - Architecture and data model agreed first - Tests and CI from the first sprint - We inherited an app: Taking over an existing .NET app. The team or vendor that built it has gone and changes take too long. - Code, package and security review - Tests added around the riskiest areas - A written report and a plan - It is out of date: Upgrading or modernizing. The app runs on .NET Framework 4.x, .NET 6, 8 or 9, Web Forms or WCF. - Projects retargeted to .NET 10 - NuGet packages updated or replaced - Web Forms and WCF rebuilt where needed Outcome: A .NET application on a supported version that your team can keep changing ## What do our .NET development services include? Build, take over, upgrade and staff .NET work with one C# team. - ASP.NET Core applications: Enterprise web apps built with tests and CI from the start. - Web APIs: REST APIs for front ends, mobile apps and partners, secured and documented. - Blazor front ends: Interactive web front ends written in C# alongside your back end. - Azure services and workers: Background workers, queues and cloud services on Azure. - .NET upgrades: .NET 6, 8 and 9 moved to .NET 10, and .NET Framework ported. - Web Forms and WCF replacement: Old Web Forms pages and WCF services rebuilt on ASP.NET Core. - Salesforce integration: .NET services that exchange data with Salesforce over its APIs. - .NET team extension: C# engineers who join your team and work in your process. ## The .NET stack we work with Current .NET from the user interface down to testing and packaging. - Front end and apps (What users see): Blazor, WPF, WinForms, .NET MAUI - Application framework (Web apps, APIs and real-time): ASP.NET Core, SignalR, C#, .NET 10 - Data and cloud (Storage and hosting): Entity Framework Core, Azure, Background workers - Testing and delivery (How changes ship): xUnit, NUnit, NuGet, Docker ## When does .NET 8 support end? .NET 8 and .NET 9 both reach end of support on 10 November 2026. .NET 10 is the current LTS release, supported to November 2028. Today: .NET Framework 4.x, or .NET 6, 8 or 9 - .NET 10, Upgrade from .NET 6, 8 or 9: Retarget projects, update NuGet packages and fix breaking changes, with tests run at each step. .NET 8 and 9 reach end of support on 10 November 2026. - .NET 10, Port from .NET Framework: Move .NET Framework 4.x code to modern .NET project by project, shared libraries first. Fits apps that need cloud hosting, containers or current libraries. - ASP.NET Core, Replace Web Forms and WCF: Rebuild Web Forms pages and WCF services as ASP.NET Core, Blazor or REST APIs. Fits apps held on .NET Framework by Web Forms pages or WCF services. ## How can you work with our .NET engineers? Three ways to engage. Each one is agreed in a written proposal before work starts. - Fixed-scope project, We deliver a defined .NET build or upgrade. - SynconAI directs the work to agreed milestones - Billed by milestone, as set out in the proposal - Working code, tests and documentation - Fits a .NET 10 upgrade or a new application - Dedicated team, A .NET team that works only on your systems. - You set priorities, our lead runs the team - Billed monthly for the team - Engineers, a lead and testing as needed - Fits a large system with ongoing changes - Team extension, C# engineers who join your team. - Your managers direct the day-to-day work - Billed monthly for each engineer - Vetted engineers, with employment and replacement handled by us - Fits teams with a working process that need more hands ## How does a .NET engagement start? Five steps from the first call to working code. - Brief: Call about your system and goals; Repository access or a written scope - Match or design: Engineers matched to your stack; Plan and proposal in writing - Start: NDA, access and environments set up; Solution walkthrough and a first task - Build and review: Work shipped in short cycles; Code review and demos with your team - Hand over or continue: Documentation and a handover session; Or a monthly plan for ongoing work ## Cost and timing The first step is a free 60-minute architecture review of your .NET setup, with a written plan you keep. Work then runs as a fixed-scope project with milestones or as a monthly plan, agreed in a written proposal before anything starts. Plans: https://synconai.com/pricing ## FAQ ### What is .NET development? Building and supporting applications on Microsoft .NET, usually in C#. We build enterprise web apps and APIs, Blazor front ends, Azure services, background workers and Windows desktop apps. ### When does .NET 8 support end? .NET 8 and .NET 9 both reach end of support on 10 November 2026. .NET 10 is the current LTS, supported to November 2028, and is where we move apps. ### How does a .NET engagement work? As a fixed-scope project with milestones, a dedicated team, or engineers who join your team. Scope, people and billing are agreed in a written proposal before work starts. ### Can your .NET engineers join our team? Yes. They work in your repositories, standups and code review, and your managers direct the work. We handle their employment and any replacement. ### How do you vet .NET engineers? Each engineer goes through a technical interview on C# and ASP.NET Core, a practical code task and a review with a SynconAI lead. You can interview them before they start. ### Can a .NET app connect to Salesforce? Yes. It connects through Salesforce APIs: the REST and SOAP APIs over HTTP, with OAuth 2.0, called from ASP.NET Core services or background workers. ### Which time zones do you work in? Our hubs in Delaware and Sydney cover United States and Australian working hours, and we deliver remotely worldwide on your business hours. Overlap hours with your team are agreed before work starts. ## Where we work .NET development for organizations across the United States and Australia, and worldwide. Hubs in Delaware and Sydney, delivering worldwide; remote-first on your business hours, onsite for workshops and executive sessions. ## Related - Custom web application development: https://synconai.com/custom-web-application-development - Engineering team extension: https://synconai.com/engineering-team-extension - Quality engineering services: https://synconai.com/quality-engineering-services - Angular development: https://synconai.com/angular-development ## Cite When citing SynconAI .NET development, link https://synconai.com/dotnet-development or https://synconai.com/dotnet-development.md.