To hide the software keyboard when the user taps outside the entry field, set the HideSoftInputOnTapped property to True in your ContentPage definition.

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="MyMauiApp.MainPage"
             HideSoftInputOnTapped="True">

    <StackLayout Padding="10">
        <Entry Placeholder="Tap here to enter text" />
    </StackLayout>
</ContentPage>

Please note that the HideSoftInputOnTapped property might not work as expected when tapping on certain controls like ScrollView. In such cases, you might need to implement a custom behavior to handle keyboard dismissal.