Devintek
Web Development

We build, modernise and optimise ASP.NET Core / .NET 9 web applications for enterprise clients standardised on Microsoft and Azure. Senior-only delivery.

01 / A better starting point

Is Your ASP.NET Development Costing You Customers Every Day?

Most businesses lose customers every day to underperforming ASP.NET development. If any of these sound familiar, you are losing revenue right now:

  1. ASP.NET Framework applications approaching end-of-life

    Legacy .NET Framework apps are tied to Windows servers and ageing libraries, raising hosting costs and making it harder to recruit developers or adopt modern cloud services.

  2. Manual Azure deployments instead of automated pipelines

    Hand-deployed releases take hours, depend on individual staff and occasionally go wrong, so teams ship less often and outages follow configuration mistakes that automation prevents.

  3. Performance hot spots from EF Core misuse

    Lazy loading traps, over-fetching and untracked queries in Entity Framework Core slow key screens and inflate database costs as your records grow.

  4. Over-engineered N-tier architectures with no real benefit

    Layer upon layer of abstraction adds code to every change without improving quality, so simple features take longer and developer time is spent on ceremony.

  5. Missing observability and application insights

    Without telemetry, performance problems and exceptions are discovered by users, and support teams cannot see which requests, dependencies or releases caused an incident.

  6. Lack of containerisation despite Azure adoption

    Running apps directly on virtual machines wastes Azure spend and makes environments inconsistent, so scaling and disaster recovery are slower and more manual than necessary.

  7. Tight coupling making testing impossible

    When business logic depends directly on databases and external services, automated tests become impractical and every release relies on slow, error-prone manual checks.

02 / Built around your ambition

Our ASP.NET web development services for enterprise — 8 Safe Solutions

Explore our services
  • 01

    ASP.NET Core 9 application development

    We build web applications and APIs on ASP.NET Core 9 with dependency injection, clean project structure and automated tests, running on Windows or Linux as suits you.

  • 02

    Minimal APIs and Razor Pages

    We use Minimal APIs for lean, fast endpoints and Razor Pages for server-rendered interfaces, avoiding unnecessary complexity where a simpler pattern does the job well.

  • 03

    Entity Framework Core data layer

    We design Entity Framework Core models, migrations and queries with profiling, so data access stays efficient and schema changes are versioned alongside your code.

  • 04

    Azure App Service / AKS deployment

    We deploy to Azure App Service for straightforward hosting or AKS for containerised workloads, with scaling rules, deployment slots and infrastructure defined in code.

  • 05

    Active Directory and Entra ID integration

    We integrate Active Directory and Microsoft Entra ID for single sign-on, role-based access and conditional access policies that match your organisation's security requirements.

  • 06

    Application Insights observability

    We instrument applications with Application Insights for request tracing, dependency tracking, exceptions and alerts, so your team can diagnose issues from real production data.

  • 07

    ASP.NET Framework to .NET Core modernisation

    We move ASP.NET Framework applications to modern .NET in phases, one bounded context at a time, keeping the existing system live while each part is rebuilt.

  • 08

    Azure DevOps CI/CD pipelines

    We build Azure DevOps pipelines that compile, test, scan and deploy automatically, with approvals between environments and repeatable releases your team can trust.

The Payoff

What Our ASP.NET Development Delivers for Your Organisation

06Reasons teams stay with us
  1. A supported .NET platform

    Moving from ASP.NET Framework to modern .NET keeps you on long-term support and cross-platform hosting.

  2. Automated Azure releases

    Pipelines replace manual deployments, so releases are repeatable and far less stressful.

  3. Efficient data access

    Entity Framework Core queries are profiled and tuned to remove N+1 problems and slow tracking.

  4. Architecture that fits the problem

    We favour minimal APIs and clear layers over heavy N-tier designs that add ceremony without value.

  5. Visibility into production

    Application Insights and structured logging show you exactly how the system behaves under real load.

  6. Secure sign-in with your directory

    Entra ID integration gives staff single sign-on and central control over access.

How we work / From idea to impact

How We Deliver ASP.NET Projects

  1. 01

    System review

    We examine your .NET version, dependencies, database and Azure setup to understand the starting point.

  2. 02

    Modernisation roadmap

    A phased plan covers framework upgrades, containerisation and any architectural simplification.

  3. 03

    Build and refactor

    We develop in ASP.NET Core with dependency injection and unit tests, so each part can be tested in isolation.

  4. 04

    Pipelines and containers

    Azure DevOps or GitHub Actions pipelines build Docker images and deploy to App Service or AKS.

  5. 05

    Monitor and hand over

    Application Insights dashboards and alerts are set up, and your team gets documentation for running the system.

Why Devintek

Why Choose Devintek for ASP.NET Development

  1. Practical experience upgrading .NET Framework apps

  2. Minimal APIs and Razor Pages where they keep things simple

  3. Entity Framework Core tuning based on real query profiling

  4. Azure App Service, AKS and container deployments

  5. Entra ID and Active Directory integration

  6. Testable code with dependency injection from the start

The Devintek approach↗

Your vision. Our craft.

Strategy, design and development working as one connected team.

Industries

Industries Using Our ASP.NET Development

  • Financial services
  • Healthcare systems
  • Government contractors
  • Manufacturing ERP
  • Education administration
  • Legal practice management
  • Corporate intranets

Investment

ASP.NET Development Packages for Enterprise Systems

New ASP.NET Core Application

Custom quote

  • Typical delivery in 16 to 36 weeks
  • ASP.NET Core 9 with EF Core data layer
  • Entra ID or Active Directory sign-in
Choose New ASP.NET Core Application

Framework to .NET Modernisation

Most Popular

Custom quote

  • Phased over 4 to 12 months
  • One bounded context at a time
  • Legacy system kept live during migration
  • Automated tests added as code moves
Choose Framework to .NET Modernisation

Azure DevOps and Observability

Custom quote

  • Azure DevOps or GitHub Actions CI/CD
  • App Service or AKS deployment
  • Application Insights monitoring and alerts
Choose Azure DevOps and Observability

FAQ

Frequently Asked Questions

Still have questions?

Our team replies within one business day with a straight answer, not a sales pitch.

Contact us

ASP.NET Web Development Services for Enterprise

ASP.NET web development services for enterprise sit at the centre of modern Microsoft-standardised technology stacks in 2026. ASP.NET Core / .NET 9 consistently leads independent throughput benchmarks, ships with first-class Azure integration, supports long-term LTS commitments, and runs natively on Linux, Windows and macOS. For organisations standardised on Microsoft 365, Azure Active Directory and Azure cloud services, ASP.NET removes friction across identity, hosting, observability and DevOps that other stacks add. Devintek ships ASP.NET in three primary engagement types. First: greenfield enterprise application development on .NET 9 with Razor Pages, minimal APIs and Entity Framework Core, deployed to Azure App Service or AKS. Second: ASP.NET Framework modernisation projects where clients move 10-year-old monolithic applications to ASP.NET Core in phased migrations, typically over 6–12 months per bounded context. Third: performance, security and observability optimisation engagements on existing ASP.NET applications. Every project uses Azure DevOps or GitHub Actions for CI/CD, Application Insights for observability, and Azure Key Vault for secret management. Our engineers are familiar with the full Microsoft ecosystem — Entra ID, Azure Service Bus, Cosmos DB, SQL Azure, AKS, and Azure DevOps — and we collaborate cleanly with internal IT teams that already own Azure tenancy.

Your next chapter

Ready to Grow With ASP.NET Development?

Let's discuss your goals on a free 30-minute strategy call. You will leave with a written roadmap — whether you hire us or not.

Book My Free Strategy Call

Strategy / Design / Technology