Ace the Angular Interview 2025 – Code Your Way to Success!

In an Angular application, a module plays a crucial role in organizing the various building blocks of the application, such as components, directives, pipes, and services. This organization facilitates a clear structure within the application, making it easier to maintain and develop.

Modules are defined using the `@NgModule` decorator, where you can specify the components, directives, and pipes that belong to that module, as well as any services that should be provided. This modular approach allows for lazy loading, which can improve performance by loading modules only when necessary. It also promotes reusability, as modules can encapsulate related functionalities that can be shared across different parts of an application or even different applications.

By contrast, other options do not align with the key functions of modules. While there may be components and services involved in user authentication, this is not the primary purpose of a module. Modules can certainly provide a hosting environment, but that statement is too broad and does not capture their specific organizational role within Angular applications. Hence, the correct answer underscores the significance of modules in structuring and managing the components and functionalities of Angular applications.