Angular 20

Understanding Angular 20 Project Architecture – Modules, Components & Services Explained

Angular 20 Project Folder Structure Explained

Angular 20 introduces a cleaner and more modern project structure by default, especially with the adoption of standalone components. In this blog, we’ll walk through each important file and folder in a typical Angular 20 project and understand their purpose and relationship with each other.

🗂 Project Structure Overview


first-project/
├── .angular/              → Angular CLI cache
├── .vscode/               → VS Code settings
├── node_modules/          → Installed dependencies
├── public/                → Static assets
├── src/                   → Application source code
│   ├── app/
│   │   ├── new/           → Feature folder (lazy load or modular)
│   │   ├── app.config.ts  → Configuration for standalone bootstrap
│   │   ├── app.html       → App component HTML
│   │   ├── app.css        → App component styles
│   │   ├── app.routes.ts  → Angular routing configuration
│   │   ├── app.spec.ts    → Unit test for the App component
│   │   ├── app.ts         → App root component (standalone)
│   ├── index.html         → Entry HTML page
│   ├── main.ts            → Bootstraps Angular app
│   ├── styles.css         → Global styles
├── angular.json           → Angular workspace configuration
├── package.json           → Project metadata and dependencies
├── tsconfig.json          → TypeScript compiler configuration
├── README.md              → Project documentation
  

📁 Important Folders & Files

1. src/

This is the heart of the application. All your Angular code resides here.
  • app/: Contains core and feature files of your application.
  • index.html: Base HTML page; Angular injects the app here.
  • main.ts: Entry point that bootstraps the app using app.config.ts.
  • styles.css: Global stylesheet applied across the app.

2. app.ts – Root Standalone Component

This file defines the root component using standalone: true. It replaces the traditional app.module.ts.

import { Component } from '@angular/core';
import { RouterOutlet } from '@angular/router';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [RouterOutlet],
  templateUrl: './app.html',
  styleUrl: './app.css'
})
export class App {
  protected title = 'first-project';
}
  

3. app.config.ts – Application Configuration

Instead of bootstrapping via a module, Angular 20 uses this config file to define imports and routes.

import { provideRouter } from '@angular/router';
import { routes } from './app.routes';

export const appConfig = {
  providers: [provideRouter(routes)],
};
  

4. main.ts – Application Bootstrapper

This is the entry point for the Angular application. It uses bootstrapApplication() instead of platformBrowserDynamic().bootstrapModule().

import { bootstrapApplication } from '@angular/platform-browser';
import { App } from './app';
import { appConfig } from './app.config';

bootstrapApplication(App, appConfig)
  .catch(err => console.error(err));
  

5. app.routes.ts – Routing Configuration

This file defines the application’s route structure using the new loadComponent() API for lazy-loaded standalone components.

import { Routes } from '@angular/router';

export const routes: Routes = [
  {
    path: 'new',
    loadComponent: () => import('./new/new.component').then(m => m.NewComponent)
  }
];
  

🧩 Feature Folders (e.g. new/)

Angular 20 promotes modular architecture using feature folders. Each feature can have its own standalone component and routes.
  • Encapsulate related logic
  • Lazy-load components when needed
  • Improve maintainability and scaling

📌 Summary of Angular 20 Structure

  • No AppModule: Bootstraps with standalone App component.
  • Modular Features: Easily lazy-loaded via loadComponent().
  • Fewer Files: Less boilerplate compared to older versions.
  • Faster Setup: Simplified CLI usage and default settings.

✅ Best Practices

  • Organize features in their own folders.
  • Use standalone components to reduce dependencies.
  • Keep configuration files (routes, bootstrap) outside of UI logic.
  • Use meaningful names and split code logically.

🧠 Conclusion

Angular 20 simplifies the developer experience by reducing boilerplate and embracing component-first architecture. Understanding this folder structure helps you build apps that are scalable, modular, and easier to maintain.

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