One of the main criticisms of project.json was its limited MSBuild integration. This made it challenging to integrate with existing build systems and tools, leading to its replacement with the more MSBuild-oriented csproj format in ASP.NET Core.

The best approach to clean up and organize repetitive namespace imports in Razor views is to create a common _ViewImports.cshtml file for shared namespaces. This file can be placed in the project root or a shared folder and then referenced by all the Razor views. This helps maintain consistency, reduces redundancy, and simplifies future updates to shared namespaces.

The RefreshSignInAsync method can be used to refresh the sign-in information of a user in scenarios like role updates or other security-sensitive operations. This method generates a new security token for the user, helping to prevent token-based attacks and ensuring the user's session remains secure.

To ensure that Entity Framework Core doesn't throw detailed database errors to the client, you should use "Exception Handling Middleware." This middleware intercepts exceptions, handles them, and returns a user-friendly error response to the client without exposing sensitive database details.

JWT or JSON Web Tokens are often used in conjunction with the Bearer authentication scheme in ASP.NET Core. The Bearer scheme is commonly used to secure APIs and web applications, where a client includes a JWT token in the HTTP Authorization header to authenticate and authorize their requests. This scheme is based on the bearer token concept, where possession of the token is sufficient for authentication.

For building cross-platform web applications that can run on both Windows and Linux servers, ASP.NET Core is the ideal choice. Unlike ASP.NET Framework, ASP.NET Core is designed to be cross-platform, lightweight, and high-performance, making it suitable for modern, cloud-native applications.

To capture the language segment as part of the URL, you can use route parameters like {language} in your route templates. For example, the route template "{language}/Home" will capture the language segment from URLs like /en-US/Home and /fr-FR/Home.

ASP.NET Core utilizes NuGet packages for its dependencies, unlike the monolithic System.Web.dll used in traditional ASP.NET. NuGet packages allow for a more modular and granular approach to including libraries, reducing the size of your application and making it more efficient.

The primary purpose of ASP.NET Core Identity is authentication and authorization. It provides a framework for managing user authentication, user roles, and permissions in ASP.NET Core applications. It helps secure your application by verifying the identity of users and controlling access to resources.

Visual Studio is one of the most commonly used Integrated Development Environments (IDEs) by ASP.NET Core developers. It provides a robust set of tools and features for creating, testing, and deploying ASP.NET Core applications, making it a popular choice in the developer community.