Blazor can be an excellent fit for portals and operational web apps, especially when your team already runs on .NET. The planning questions matter more than the framework choice alone.
Define the portal audience.
Is the portal for customers, staff, vendors, or administrators? Each audience changes the navigation, permissions, content, support expectations, and release risk.
Map workflows before screens.
Start with jobs users need to complete: submit a request, review a queue, approve a record, view reporting, update status, or manage documents. Screens should support those workflows, not the other way around.
Set permission rules early.
Role-based access, tenant boundaries, audit history, and sensitive data rules should be designed before implementation. Retroactive permission fixes are expensive and risky.
Choose the right Blazor model.
Blazor Server, WebAssembly, and hybrid approaches have different tradeoffs around hosting, latency, offline needs, authentication, and deployment. Pick the model around the actual workflow constraints.
Plan ownership.
A good portal has documentation, predictable component structure, deployment notes, and enough test coverage around the workflows that can hurt the business if they regress.