In ASP.NET Core MVC, the ViewImports file is used to globally import namespaces, tag helpers, and other configurations for Razor views. This eliminates the need to repeatedly include namespaces or directives in every Razor page or view file.

Example of ViewImport

@using MyApp.Models
@using MyApp.Services
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
@addTagHelper *, MyApp