Use of navigation manager over href in blazor web-assembly

In Blazor web-assembly, is there a reason why should I use NavigationManager over a plain a href link structure?

For example

<a href="/test">Test</a>

<a @onclick="@LinkToTest">Test</a> or
<button @onclick="@LinkToTest">Test</button>

@code
{
void LinkToTest()
{
NavigationManager.NavigateTo("/test");
}
}

Is there a difference how the app would be rendered or routed?