.NET and React development for custom enterprise applications
When off-the-shelf software does not fit the way your business works, Veratas builds the application that does. Custom web and line-of-business systems with an ASP.NET Core backend and a React front end, architected, tested, and engineered to stay supportable for years.
Custom software is a deliberate choice, not a default
The first honest question is whether you should build at all.
Custom development is the right answer less often than people assume. A standard process, expenses, leave requests, basic CRM, is almost always served better by a configured product or a Power Platform solution: cheaper, faster to deliver, and someone else’s problem to maintain. Building custom software for a problem the market has already solved well is a slow and expensive way to arrive at a worse outcome. We start engagements by establishing whether that is the situation, and if it is, we say so.
Custom build earns its place in three situations. First, when the process is a genuine differentiator, something your business does that competitors do not, where shaping the software to the process is the point. Second, when no product fits without compromises so heavy that the workarounds cost more than a build. Third, when integration depth and control matter more than speed, and you need the application to behave exactly as the surrounding systems require.
When one of those holds, a well-engineered custom application is a strong asset: it fits the process precisely, it integrates on your terms, and it can evolve as the business does. The risk is not the decision to build; it is building without engineering discipline, producing software that works at launch and becomes a liability within two years. Avoiding that is the whole point of how we deliver.
Custom app discovery sprint, from $4,000
A fixed-fee two-week sprint that de-risks a custom build, ending in a prototype and a costed quote.
Fixed fee from $4,000 | 2 weeks | Price shown up front
A de-risked path to your custom app
Two weeks to turn an idea into a prototype and a fixed-fee build quote.
- Requirements and scope workshops
- Solution and technical architecture
- A clickable prototype of the core flow
- Technology and effort recommendations
- A fixed-fee build quote and plan
- Findings readout
The $4,000 covers the discovery sprint. The build itself is quoted from the sprint output.
What is in the $4,000, and what we quote separately
The build itself is scoped from the sprint and quoted before you commit.
| In your $4,000 | The build, quoted from the sprint |
|---|---|
| Requirements and architecture | The full application build |
| A clickable prototype | Development, testing, and QA |
| A fixed-fee build quote | Deployment and DevOps |
| Effort and technology plan | Integrations and data migration |
| Findings readout | Ongoing support and maintenance |
You pay $4,000 for the discovery sprint. The build is scoped from the sprint and quoted transparently, always shown before you decide.
Custom application development
We build the web and line-of-business applications that run real business processes, with the engineering discipline enterprise software needs to last.
Web applications
Custom web applications with an ASP.NET Core backend and a React front end: responsive, performant, and accessible to WCAG standards. A modern, well-staffed technology pairing that integrates naturally with the Microsoft estate.
Line-of-business systems
Applications that run core operational processes, workflow, case management, customer and partner portals, fitted precisely to how your business works rather than forcing the business to fit a generic product.
APIs and integration
Well-designed REST APIs and integration with Microsoft 365, Dynamics 365, Azure services, and third-party systems. Versioned contracts, authentication through Microsoft Entra ID, and proper error handling, documented for the teams that consume them.
Cloud-native on Azure
Applications engineered for Azure: App Service or containerised on Azure Container Apps, managed databases such as Azure SQL, with scalability, configuration, and secrets management designed in from the start.
CI/CD and automated testing
A delivery pipeline in Azure DevOps or GitHub Actions, with unit, integration, and end-to-end tests running on every change. Releases are repeatable and low-risk rather than a manual event to be feared.
Monitoring and operability
Application Insights telemetry, structured logging, health checks, and alerting, so the live application is observable and supportable, and problems are seen before users report them.
Engineering, not just coding
Application delivery runs through five phases, with architecture, testing, and operability built in throughout rather than added at the end.
Discover
We capture requirements, map user journeys, and define a solution architecture. We also confirm that a custom build is genuinely the right call. The output is a scoped, estimated delivery plan with a clear definition of done.
Architect
We design the application and data architecture, the API contracts, the security model and authentication approach, and the Azure hosting topology, before significant code is written, so the foundations are deliberate.
Build
We develop in agile sprints, demonstrating working software every cycle. Automated tests are written alongside features, and continuous integration keeps the codebase releasable rather than letting integration debt accumulate.
Harden
We run quality assurance, a security review, performance and load testing, accessibility checks, and user acceptance testing with your team. Defects are resolved against agreed criteria before go-live.
Operate
We deploy to Azure with monitoring and alerting in place, transfer knowledge through documentation and walkthroughs, and move the application onto SLA-backed support and enhancement.
A deliberate technology pairing
The stack is chosen for reliability, longevity, and how easily it can be staffed, not for novelty.
ASP.NET Core is a mature, high-performance, secure backend platform with long-term support from Microsoft and a deep talent pool. For an organisation already running Microsoft 365, Dynamics 365, and Azure, it is the natural choice: authentication through Microsoft Entra ID, hosting on Azure App Service, and integration with the rest of the estate all work without friction. It is a backend you can hire for and support for a decade, not a framework that is fashionable now and orphaned later.
React is a proven, widely adopted front-end library with a large ecosystem and a correspondingly large pool of developers. It builds responsive, accessible interfaces, and it is well understood enough that the application can be maintained by other teams in future without an unusual skill set. We pair it with TypeScript for type safety and a tested component structure, so the front end stays as disciplined as the backend.
None of this is about chasing the newest tool. Enterprise software is a long-term commitment, and the right stack is the one that will still be supportable, staffable, and secure in five years. .NET and React meet that test, and they integrate cleanly with the Microsoft technology you already run, which keeps the total cost of ownership down.
FAQ
Frequently asked questions
Quick answers to questions you may have. Can't find what you're looking for? Check out our full documentation.
Build the application your business actually needs
When off-the-shelf software does not fit, a well-engineered custom application does. Start with a conversation about what you are trying to build, and an honest view on whether to build it.