What is a modular structure in Angular?

In Angular, a modular structure is the organization of an application as separate, logically related blocks (modules), each of which manages its own set of components, directives, pipes, and services.

#Key points

1. NgModule - the basic building block of the modular structure.

• Defined using the @NgModule decorator.
• Contains:
  • declarations - components, directives, and pipes that belong to the module.
  • imports - other modules required for the current module to work.
  • providers - services available through DI.
  • exports - elements that can be used in other modules.

2. Root module (AppModule)

• The application's starting point.
• Imports all the required feature modules.

3. Feature modules

• Split the application into logical parts: UserModule, AdminModule, SharedModule, and so on.
• Provide reusability, readability, and maintainability of the code.

4. Advantages of a modular structure

• Improves code organization and project maintenance.
• Allows lazy loading of modules (Lazy Loading) to optimize performance.
• Makes testing and scaling the application easier.

In other words, a modular structure is a logical segmentation of the application into independent blocks, each of which encapsulates its own functionality and dependencies.