Modernizing legacy applications is more than just a technology upgrade — it's a strategic move to future-proof your business. At Assemblysoft, we’ve helped numerous clients successfully migrate from aging platforms to modern Blazor-based applications, enabling them to streamline workflows, enhance user experiences, and embrace cloud and mobile architectures.
With our UK-based development team, we deliver solutions that are fast, secure, and scalable — backed by best practices and tailored to your organization’s needs.
Why Blazor?
Blazor is a modern UI framework built on .NET that allows you to develop rich, interactive web UIs using C#. By eliminating the dependency on JavaScript and enabling full-stack .NET development, Blazor bridges the gap between client and server-side logic, resulting in faster development and easier maintenance.
At Assemblysoft, we specialize in full-stack Blazor development that empowers businesses to leverage both Blazor Server and Blazor WebAssembly. With .NET 8’s support for multiple render modes, Blazor now offers unparalleled flexibility for building web applications.
9 Essential Blazor Best Practices
Here are the top strategies we apply at Assemblysoft when building or modernizing apps with Blazor:
1. Understand the Component Lifecycle
Understanding lifecycle methods like OnInitialized, OnParametersSet, and ShouldRender helps ensure your components behave predictably and efficiently. This knowledge is vital for managing when components render or refresh.
2. Find the Right Component Size
Start simple. Build your UI logic inside a single page, then break it down into reusable child components as complexity grows. Prioritize cohesion over file length to keep your code maintainable.
3. Implement Render Mode Agnostic Components
With .NET 8, you can mix Blazor Server and WebAssembly. Avoid setting render modes in reusable components. Instead, define them at the page or layout level to increase reusability across hosting models.
4. Learn Proper Event Handling
Use C# event handlers and ensure you unsubscribe from events like NavigationManager.LocationChanged to avoid memory leaks. For component-to-component communication, leverage EventCallback.
5. Choose Appropriate State Management
From simple parameters to complex state containers like Fluxor, your state management strategy should match your application’s complexity. Assemblysoft can help architect scalable patterns for shared state.
6. Polish Code Organization and Structure
Structure your Blazor solution with meaningful folder layouts and consistent naming conventions. Group related services, models, and components logically to improve discoverability and maintainability.
7. Secure Your Application
Implement ASP.NET Core Identity for robust authentication and authorization. Use HTTPS, never store raw passwords, and follow OWASP Top 10 guidelines to protect against common web vulnerabilities.
8. Use Proper Error Handling and Logging
Utilize structured logging with tools like Serilog to capture meaningful diagnostic data while excluding sensitive information. Implement global error boundaries to gracefully handle exceptions.
9. Keep It Simple
Favor straightforward solutions. For instance, pass data using component parameters before introducing shared services. Simplicity leads to clarity, less maintenance, and fewer bugs.
Component Libraries We Support
Assemblysoft offers expert integration with the industry's most powerful Blazor UI libraries, ensuring pixel-perfect, accessible, and performant UIs:
Library Highlights
Telerik UI for Blazor
100+ feature-rich components with performance-first architecture and enterprise-grade support.
MudBlazor
Lightweight Material Design components with great developer experience.
Blazorise
Supports multiple CSS frameworks (Bootstrap, Material, Bulma, etc.).
Syncfusion
Over 100 components including advanced data grids and visualizations.
Radzen
Enterprise-ready UI with low-code productivity features.
AntDesign Blazor
Elegant UI components based on Ant Design.
MatBlazor
Simple Material Design UI components.
Microsoft Fluent UI
Fluent Design components for accessible and consistent UI.
Blazored
A collection of reusable, open-source Blazor components and utilities.
We help you select the best library based on your design requirements, performance goals, and licensing model.
Why Choose Assemblysoft?

- 🧠 Deep Blazor Expertise: From Blazor Server to WebAssembly and Hybrid apps, we have hands-on experience across the stack.
- ☁️ Cloud-Native Architecture: We design for scalability using Azure services and modern CI/CD pipelines.
- 📱 Mobile-Ready UI: We support Blazor Hybrid for native mobile apps alongside responsive web experiences.
- 🔒 Secure by Design: Every solution we build adheres to security best practices and compliance expectations.
We offer more than just Blazor expertise — we’re a trusted partner for custom software development, capable of designing, building, and scaling full platforms from the ground up.

Let’s Modernize Together
Legacy applications hold valuable business logic, but their outdated architectures slow progress. At Assemblysoft, we turn that legacy into leverage — enabling your systems to thrive with the latest technology.
Contact us today to discuss your modernization needs and learn how our Blazor expertise can help transform your platform into a future-proof solution.