In the past few years Blazor developed from an experiment to a legitimate choice for many .NET users and companies looking to improve productivity and efficiency.
In those years there was a lot of debate on who should use Blazor and how it fits into other systems or what problems does it solve. Some of those question got a straight up answer as Blazor developed into a full stack platform but some of the main questions remain: how does it compare to other frameworks, what does it mean for businesses using other technologies and who benefits the most by exploring Blazor?
That is what we will try to explain in this blog, so lets dive in.
In the beginning… and now
Blazor started as an experiment way back in 2017, mostly as a server-side technology with experimental WebAssembly support. It was part of the broader evolution of the .NET ecosystem, where Microsoft was exploring how to bring modern, component-based web development into the familiar C# and .NET world.
Then Blazor evolved into a serious contender on the market when .NET 8 merged the hosting models, and now when you create an app you can choose: do you want server-side only, client-side with WebAssembly, or a hybrid “auto” mode where the app starts on the server and then gradually moves to the client. This flexibility is a key part of the modern .NET ecosystem, which aims to unify development across web, desktop, mobile, and cloud.
That’s where we are today with Blazor 10. It sits alongside ASP.NET Core, .NET MAUI, and other tools as part of a cohesive full-stack platform for building applications using C# end-to-end.
How does Blazor compare to Angular?
Today it compares quite well. Instead of TypeScript or JavaScript, you can use C# and the entire .NET toolchain, including Visual Studio, NuGet packages, and strong typing across both client and server. You also benefit from shared code, shared models, and integration with ASP.NET Core APIs, authentication, and cloud services like Azure.
We will dig deeper into this topic in our next post so stay tuned.
We really invested in React, should we go to Blazor?
The answer is generally no. A lot of software written in React already has people, processes, and a mature ecosystem around it. Blazor doesn’t offer enough benefit to justify rewriting if your team is already strong in JavaScript frameworks.
The .NET ecosystem complements rather than replaces these tools in many cases.
But if you’re coming from Windows Forms or Web Forms and haven’t gone down the Angular or React road, and most of your people are .NET developers, then Blazor becomes very compelling. You can keep using C#, reuse business logic, and stay within the .NET ecosystem without retraining your entire team in JavaScript-heavy stacks.
This becomes a business decision involving staffing, productivity, and long-term maintenance.
What if your apps are running in outdated technologies?
Maybe your primary legacy apps are running in technologies like Windows Forms and WPF, which are still actively maintained but not heavily invested in anymore. They are effectively in maintenance mode within the .NET ecosystem.
Blazor, WPF, and Windows Forms share similar concepts such as components, event handling, and UI binding. But the big difference is this: if you are writing software that needs to directly interface with manufacturing machines or specialized hardware, you usually cannot access that through a browser. In those cases, you must create native applications.
This is where the broader .NET ecosystem becomes important. With .NET MAUI and Blazor Hybrid, you can build native desktop and mobile applications using Blazor components while still having full access to the operating system and hardware.
Different ways you can host Blazor
Blazor can run purely on the server using ASP.NET Core. This is called server interactive mode. All of your application logic runs on the server, and the browser maintains a real-time connection (typically via SignalR). Only a small amount of JavaScript, HTML, and CSS is downloaded. This leads to fast startup times and centralized control, but it requires a constant connection and cannot run offline.
When Blazor runs on the server, it is stateful rather than stateless.
Each user maintains a live session with the server.
If we look at real-world systems, many critical applications, such as flight systems and financial transaction processing, still rely on stateful architectures like mainframes.
Most of the world still runs on these systems.
So the stateful model of Blazor Server should not be dismissed. It aligns with many existing, proven enterprise patterns within the broader computing ecosystem.
With WebAssembly, you can build Blazor apps that run entirely on the client. In this model, the browser downloads HTML, CSS, and compiled .NET assemblies (DLLs), along with dependencies from NuGet packages. The app then runs directly on the user’s device using a WebAssembly-based .NET runtime.
This allows massive scalability because the server is no longer responsible for UI execution. However, there is a startup cost, especially for public-facing applications. If a site takes 3–5 seconds to load, users may leave.
Server-side rendering (SSR) in Blazor works similarly to Razor Pages in ASP.NET Core. The server generates HTML and sends it to the browser, where it is displayed without interactivity. This is useful for static or read-only content, SEO optimization, and fast initial page loads.
Blazor now supports multiple rendering modes within the same application: static SSR, interactive server, interactive WebAssembly, and hybrid approaches. This flexibility is a defining strength of the modern .NET ecosystem.
It is also possible to create fully client-side-only applications.
Tools like the DartSassBuilder NuGet package integrate into the .NET build pipeline, allowing you to compile and customize SCSS styles as part of your application workflow. This highlights how front-end tooling is integrated into the .NET ecosystem rather than managed separately.
Blazor can also be used to build native applications that run offline
Progressive Web Apps (PWAs) are a key part of this. They allow web applications to be installed on a device and run without an internet connection. Originally popularized by Google for offline apps like Google Sheets on Chromebooks, PWAs use a manifest file and service workers to cache resources locally.
Within the .NET ecosystem, PWAs can be combined with Blazor WebAssembly to deliver offline-capable web apps using C#.
For deeper native integration, .NET MAUI Blazor Hybrid allows you to wrap Blazor components inside fully native applications for iOS, Android, macOS, and Windows.
These true native apps are not limited by the browser sandbox. They can access file systems, sensors, hardware devices, and platform-specific APIs just like traditional WPF or Windows Forms applications.
With the MAUI approach, mobile apps are distributed through app stores, while on Windows you can create installable packages that users can run directly on their devices.
Overall, Blazor is not just a web framework, it is a central piece of the modern .NET ecosystem, enabling developers to build web, desktop, and mobile applications using a unified language, tooling, and architecture.
Final notes
As we can see from this brief analysis, companies and developers already in the .NET sphere benefit the most from trying out Blazor.
It saves you the trouble of going through the steep learning curve of entirely new frameworks and languages, allowing you to stay within a familiar ecosystem while still building modern, interactive web applications.
By leveraging existing knowledge of C#, .NET libraries, and tooling, teams can streamline development, reduce context switching, and maintain consistency across projects. This not only improves productivity but also lowers long-term maintenance costs.
In the end, Blazor represents a natural evolution for .NET developers bridging the gap between backend and frontend development, and opening up new possibilities without requiring a complete shift in mindset or skill set.
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