Tore Nestenius Datakonsult AB (TN-Data) is a Swedish consulting and training company, run by Tore Nestenius, a Microsoft .NET MVP. We help development teams get authentication, identity and security right in .NET.
- Authentication and Authorization
- OpenID Connect and OAuth
- Duende IdentityServer
- Domain-Driven Design (DDD), CQRS and Event Sourcing
- .NET, C# and ASP.NET Core
- Azure and cloud development
- Open source tools for .NET, Azure and AI coding agents
Consulting. Hands-on help for teams building on .NET and Azure:
- Authentication and authorization architecture, and reviews of existing solutions
- Duende IdentityServer implementation and review
- OpenID Connect, OAuth and the BFF pattern
- Web security reviews
- Architecture: Domain-Driven Design (DDD), CQRS and Event Sourcing
- Technical due diligence: code and architecture reviews of large .NET codebases
- Azure identity for .NET applications
Training. Workshops for development teams, on-site or online, in English or Swedish. They cover authentication and OpenID Connect, web security, DDD, CQRS and Event Sourcing, ASP.NET Core and C#, and can be tailored to your team and your codebase.
Talks. Conference and user group talks on authentication, security, Azure and AI-assisted development, usually 45 to 60 minutes, in English or Swedish.
Development teams and architects who build web applications and APIs on .NET, and who need authentication and security that is correct and understandable. The first step is a short call, with no obligation, to understand what you need.
- Website: tn-data.se, and contact
- Video courses on Dometrain:
- LinkedIn: Tore Nestenius
- Blog: nestenius.se, with articles on ASP.NET Core authentication, IdentityServer, the BFF pattern and Azure
- PublicBlogContent, the code and slides that accompany the blog posts and talks
- More tools, like Coding Agent Explorer and Cloud Debugger, are on Tore's personal GitHub page