ASP.NET Core provides robust built-in features for security. Authentication and Authorization are fundamental to securing web applications by controlling user access and protecting sensitive data. These features help safeguard your application against unauthorized access and attacks.

ASP.NET Core Identity is a built-in membership system that provides out-of-the-box functionalities for user registration and authentication. It simplifies tasks like user management, password hashing, and role-based authorization in ASP.NET Core applications.

The Register.cshtml view typically corresponds to the user registration process in an ASP.NET Core application. This view usually contains the registration form where users can enter their information to create an account.

You can restrict routes to specific HTTP methods in ASP.NET Core MVC using attribute routing. By decorating your controller actions or route templates with attributes like [HttpGet] or [HttpPost], you specify which HTTP methods are allowed to access those routes.

Integration testing is specifically designed to test how different parts of a system work together. In the context of ASP.NET Core, it checks the interactions between services, databases, and external systems to ensure that they function correctly as a whole.

The primary focus when adjusting the development setup for containerization should be on creating Docker containers. Containerization is a crucial step for portability and scalability, allowing you to package your ASP.NET Core application and its dependencies for deployment in various environments.

ASP.NET Core is a successor to the ASP.NET MVC framework. While ASP.NET Web Forms and Classic ASP were earlier web development technologies from Microsoft, ASP.NET Core represents a more modern and flexible approach to web development.

ASP.NET Core achieves modularity through the extensive use of NuGet packages. This means that various components and libraries are organized as packages, making it easy to update, replace, or extend specific parts of the framework without affecting the entire application. This is a significant departure from the monolithic architecture of its predecessor, which had tightly coupled components and fewer modular options.

The Attach method in Entity Framework Core is primarily used for tracking changes made to an entity. When you attach an entity, EF Core starts tracking it, and any changes made to that entity will be detected and persisted when you call SaveChanges. This is especially useful when you want to work with entities that have been detached from the context.

The most probable cause of a 404 error when accessing an action method is incorrect route configuration. Ensure that the route for the "Details" action method in the "Products" controller is properly configured to accept the required parameters, such as the product ID (e.g., "{controller}/{action}/{id}").