We know exactly how to deliver the best combination of Blazor technologies to ensure your customers benefit from robust, secure and delightful user experiences to get on with their job effortlessly.
Our clients come to us to build best-of-breed Blazor applications that deliver business value from day one — safe in the knowledge we will make the best architecture decisions on their behalf.
Full-stack C# for both server and client in a single unified project. The modern Microsoft-recommended Blazor hosting model for .NET 8+ — all render modes in one codebase.
The unified Blazor Web App model is Microsoft's strategic direction for .NET web development. It combines every render mode in a single project — letting teams ship fast, interactive, SEO-friendly applications in pure C#.
C# end-to-end for UI, business logic, validation and API calls. No context switching between JavaScript frameworks.
Static SSR delivers fully rendered HTML on first request. No JavaScript bundle needed for non-interactive pages.
Server-rendered pages are indexable by search engines without special configuration or pre-rendering services.
Apply Static SSR, Interactive Server, WebAssembly or Auto to individual components. Optimise exactly where it matters.
Share Razor components across Blazor Web Apps, MAUI Hybrid and class libraries. One investment, multiple surfaces.
Blazor Web Apps excel in data-driven enterprise applications where teams want the productivity of .NET without shipping a JavaScript SPA. Common use cases include:
The Blazor Web App model lets you assign a render mode per page or per component — choosing the execution strategy that best fits each part of your application.
The component is rendered to HTML on the server and sent to the browser. No SignalR circuit or WebAssembly runtime is started. Best for content-heavy, non-interactive pages where SEO and page speed are priorities.
No JS required SEO-optimised Fastest TTIThe page shell is streamed to the browser immediately whilst async data loads server-side. Loading indicators replace async sections until they resolve — combining fast perceived load with rich data-driven content.
Async data Fast perceived load Progressive renderComponent interactivity is handled server-side over a persistent SignalR WebSocket circuit. UI events are dispatched to the server; DOM diffs are sent back. Instant start-up, full access to server resources.
SignalR Real-time UI Server resources.NET runs directly in the browser via WebAssembly after the runtime is downloaded. Offline-capable, low-latency interactions, no server round-trip for UI events.
In-browser .NET Offline Low latencyBlazor Auto starts as Interactive Server for instant interactivity, then silently downloads the WebAssembly runtime in the background. On subsequent visits it runs fully client-side — best of both worlds.
Server-first boot WASM on repeat visit Best of bothAssemblysoft builds on the latest .NET 10 release, taking advantage of the productivity and performance improvements shipped to the Blazor platform.
Components can now be preloaded during navigation for instant perceived transitions — reducing the download gap on the Auto render mode path.
EditForm and DataAnnotationsValidator have been refactored for reliability across SSR and interactive modes, closing edge-case bugs around model binding.
Interactive Server circuit reconnection is more resilient with configurable retry intervals, exponential back-off and a refreshed default UI overlay.
New NavigateTo overloads support history-replace semantics and additional navigation state — enabling cleaner URL management in SPAs and form flows.
The Blazor Identity scaffolding now includes first-class support for passkeys via the WebAuthn browser API, enabling passwordless authentication out of the box.
We track .NET previews closely so your applications can take advantage of the latest platform capabilities as soon as they ship.
Ahead-of-time startup optimisations targeting .NET 11 aim to reduce first-load overhead for both Interactive Server and WebAssembly render modes.
Simplified base-path configuration for apps deployed to sub-paths, removing boilerplate from Program.cs and making container deployments easier.
Built-in Content Security Policy nonce support for inline scripts and styles — removing the need for custom middleware to meet enterprise security requirements.
Expanded navigation lifecycle events let components react to route changes, cancellations and redirects — enabling richer client-side navigation guards.
A TempData-equivalent mechanism for Blazor components allows success/error messages to survive post-redirect-get flows without custom session handling.
The Blazor Identity scaffold UI is being overhauled with a cleaner default design and improved accessibility, reducing effort to ship a production-quality auth flow.
Watch a detailed walkthrough covering the architecture, trade-offs and business considerations for each Blazor hosting model.
Assemblysoft is a UK-based Microsoft Partner that has delivered production Blazor applications across medical, pharma, manufacturing and SaaS domains. We bring architecture leadership, hands-on delivery and long-term support in one team.
Whether you need to build from scratch, rescue a struggling project or upskill your internal team, we have the depth of Blazor experience to move fast and get it right.
Start a Blazor Project Our ServicesWe design the render mode and component strategy before writing a line of code — ensuring the right Blazor model for your workload.
C# for UI, API, data access and DevOps pipeline — one team, one language, zero integration overhead.
Multiple live Blazor applications in medical, pharma and enterprise domains. Real-world lessons applied from day one.
App Service, Azure Container Apps, Static Web Apps and Azure DevOps CI/CD — the full Microsoft cloud stack.
We actively track the .NET release cadence and ship on the latest LTS and preview versions — keeping your application current.
Weekly demos, open backlogs and clear communication. You always know where your project stands.
.NET MAUI Blazor Hybrid lets you ship a single shared codebase to Android, iOS and Windows — combining native performance with Blazor's component model.
Cross-platform native shell targeting Android, iOS and Windows from one project. Assemblysoft has shipped multiple MAUI apps to production app stores.
Razor components built for your Blazor Web App can be reused inside the MAUI Blazor Hybrid shell with zero modification — accelerating mobile delivery.
Services, validators and domain models live in shared .NET class libraries — consumed by both the Blazor Web App and the MAUI application.
We handle the full store submission pipeline — certificates, provisioning profiles, signing and App Store / Google Play review submissions.
Team up with a software partner who pride themselves on sustainable development best practice.
Common questions from teams evaluating or building Blazor on .NET.
A Blazor Web App is a modern Microsoft web application model that allows developers to build interactive web applications using C# and .NET instead of JavaScript.
Blazor supports multiple rendering modes:
This flexibility allows developers to optimise performance and scalability for each part of their application.
| Feature | Blazor Server | Blazor WebAssembly |
|---|---|---|
| Execution | Runs on the server | Runs in the browser |
| Communication | SignalR connection | Direct browser execution |
| Initial load | Very fast | Larger first load |
| Offline capability | No | Yes |
| Scalability | Requires server resources | Scales via CDN |
Modern Blazor Web Apps combine both approaches depending on the page or feature.
Yes. Blazor is commonly used for enterprise dashboards, SaaS platforms, workflow systems, internal portals, CRM systems and operations software. Because it runs on ASP.NET Core, it inherits the scalability, security, and reliability of the .NET platform.
Not entirely. Blazor allows most functionality to be written in C#, but JavaScript interop is still used for browser APIs, third-party JavaScript libraries and advanced UI integrations. However, most business logic and UI can remain fully in .NET.
Yes, when using Server-Side Rendering (SSR). Blazor Web Apps can render HTML on the server before sending it to the browser, making them suitable for search engine indexing, fast initial page loads and public-facing websites.
Blazor integrates directly with the ASP.NET Core security stack. Common options include:
This provides enterprise-grade security out of the box.
Yes. Blazor applications scale using standard ASP.NET Core techniques — Azure App Services, container hosting, load balancing, caching layers and microservices APIs. Blazor WebAssembly apps can also scale extremely well via CDN distribution.
Absolutely. Blazor applications commonly integrate with REST APIs, GraphQL, legacy systems, ERP systems, CRM systems and cloud services. Blazor is often used as a modern frontend for existing .NET or legacy backends.
Yes. Blazor components can run in web browsers, desktop applications via .NET MAUI and hybrid mobile applications targeting Android and iOS. This allows shared UI and business logic across platforms from a single codebase.
Yes. Blazor is a first-party Microsoft framework built on ASP.NET Core and continuously enhanced with each .NET release. Recent improvements include improved render modes, WebAssembly performance enhancements, better form validation, passkey authentication and improved SSR capabilities — ensuring long-term platform support.
Hard-won lessons from building production Blazor applications.
Using Blazor Server everywhere or WebAssembly everywhere ignores the trade-offs. Correct architecture often combines SSR for public pages, Interactive Server for data-heavy areas and WebAssembly for client-heavy workflows.
Blazor Server relies on a persistent SignalR connection. Apps requiring high latency tolerance, unreliable connections or offline usage should consider WebAssembly or hybrid approaches instead.
Frequent component re-rendering can impact performance. Developers should avoid excessive state changes, use ShouldRender and structure components efficiently to minimise re-renders.
Creating very large monolithic components instead of reusable ones leads to maintenance problems. Better practice: modular UI components, shared layout components and reusable business components.
Calling JavaScript repeatedly in loops or UI updates creates performance bottlenecks. Interop should be minimal, batched where possible and used only where necessary.
Common mistakes include poor API versioning, tightly coupled UI logic, lack of pagination and large payload responses. Blazor applications still depend on well-designed APIs.
Large apps may suffer from longer initial load times and large download sizes. A hybrid rendering strategy combining SSR and Interactive Server is often a better fit for enterprise applications.
Without proper state management, complex apps become difficult to maintain. Solutions include scoped services, state containers, Flux-style patterns and event-driven architectures.
Large WebAssembly apps can consume significant browser memory if poorly structured. Careful use of lazy loading, component disposal and streaming APIs helps avoid this issue.
Blazor apps still require strong infrastructure design. Teams should plan early for scaling strategy, hosting environment, caching, authentication and deployment pipelines.
The biggest pitfall is treating Blazor as just another frontend framework. The real power comes when teams treat it as part of a full .NET platform architecture — combining ASP.NET Core, APIs, authentication, cloud infrastructure and reusable libraries. This is where experienced teams deliver the most value.
Talk to an experienced Blazor architect about your requirements. No sales pitch — straight technical advice.
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