Umbraco-CMS/src/Umbraco.Abstractions/Hosting/IHostingEnvironment.cs

namespace Umbraco.Core.Hosting
{
    public interface IHostingEnvironment
    {
        string SiteName { get; }
        string ApplicationId { get; }
        string ApplicationPhysicalPath { get; }

        string LocalTempPath { get; }
    }
}