public void ConfigureServices(IServiceCollection services)
{
    var builder = services.AddControllersWithViews(options =>
    {
        // Add filter to set current filter in cookies
        options.AddCultureCookieFilter();
    });
    
    services.AddLocalization(options => options.ResourcesPath = "Resources");
    builder.AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix);
    builder.AddDataAnnotationsLocalization();

    // Inject required services, add routing and replace current LinkGenerator
    services.AddRoutingLocalization(_configuration);
}

public void Configure(IApplicationBuilder app)
{
    // Setup Request localization, Rewriter and Routing
    app.UseRoutingLocalization();
    app.UseStaticFiles();
    
    // Setup Endpoints with culture
    app.UseEndpointsLocalization();
}

[Translate("en", "orders")]
[Translate("fr", "commandes")]
public class OrdersController : Controller
{
    [Translate("fr", "liste")]
    public IActionResult List()
    {
        return View();
    }
}

<form asp-controller="orders" asp-action="list"></form>

<a asp-controller="products" asp-action="detail" asp-route-id="12"></a>

<a asp-route-culture="fr">French</a>

IOptions<RequestLocalizationOptions> options

public class ProductTranslation : ICustomTranslation
{    
    public string ControllerName => "products";
    
    public string ActionName => "detail";
    
    public RewriteRule[] RewriteRules => new[]
    {
        new RewriteRule(
            @"^([-a-zA-Z]+)\/([^\/]+)\/[-\/a-zA-Z0-9]+\/p-([=._a-zA-Z0-9]+)-.*$",
            "$1/$2/detail/$3")
    };
    
    public string GenerateUrlPath(RouteValueDictionary values, FragmentString fragment)
    {
        return "/" +
           $"{values.GetParameterValue(RouteValue.Culture)}/" +
           $"{values.GetParameterValue(RouteValue.Controller)}/" + 
           "10-control-and-testing/" +
           "14-testing-string/" +
           $"p-{values.GetParameterValue(RouteValue.Id)}-testing-product-string";
    }
}

// Add custom translations as singleton
public void ConfigureServices(IServiceCollection services)
{
    services.AddScoped<ICustomTranslation, ProductTranslation>();
}

public void ConfigureServices(IServiceCollection services)
{
    var builder = services.AddControllersWithViews();
    
    // Store temp data in session
    builder.AddSessionStateTempDataProvider();

    // Add any distributed cache (this is in memory, but I can be Redis or others)
    services.AddDistributedMemoryCache();

    // Use the package to use the async distributed session
    services.AddAsyncDistributedSession();
}

public void Configure(IApplicationBuilder app)
{
    
    // Setup async distributed session
    app.UseAsyncDistributedSession();

    app.UseEndpoints();
}