Angular Dependency Injection Crash Course in Tamil | Master DI, Services & Providers (Angular 20)

Welcome to this *Angular Dependency Injection Deep Dive* — a *1-hour crash course* designed for *beginners to intermediate developers* who want to *master DI in Angular 20* with real-world examples.

In this video, you’ll learn everything about *Dependency Injection (DI)**, **Services**, **Providers**, **Injection Tokens**, and **best practices* used in modern Angular architecture. Perfect for anyone building **scalable and maintainable Angular apps**.

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📘 *What You’ll Learn*

✅ What is Dependency Injection & Why it’s essential
✅ Root Injector explained
✅ Creating and injecting services
✅ Service-to-Service Injection
✅ Understanding Providers deeply
✅ Provider configuration with `useClass`, `useValue`, and `useFactory`
✅ Injection Tokens & Configuration Injection
✅ Common DI errors and best practices

All concepts are shown *with real examples* in a brand-new Angular 20 project.

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🕒 *Timestamps*

00:00 — Course Intro
02:17 — Introduction & Setup
 • 02:22 What is Dependency Injection?
 • 04:22 Create Project
 • 06:06 What is Root Injector
 • 06:21 Creating a Basic Service
 • 06:36 What is a Service?
 • 07:15 Create LoggerService File
 • 10:31 Inject LoggerService into AppComponent
14:30 — Service-to-Service Injection & Providers Deep Dive
 • 15:18 What is Service-to-Service Injection?
 • 19:32 Using the Service & Explaining Providers
 • 22:38 What is a Provider?
 • 23:34 Provider Customization Examples
 • 30:07 Difference between `useClass`, `useValue` & `useFactory`
40:54 — Injection Tokens & Configuration Injection
 • 42:03 What is Injection Token?
 • 48:14 Use Token Inside a Service
55:53 — Common Errors & Best Practices
01:01:31 — Conclusion

💡 *About This Course*

This video is part of the *Modern Angular Deep Dive Series* — created to help developers *upgrade to the latest Angular concepts* step by step.

If you find this helpful, don’t forget to 👍 *like**, 💬 **comment**, and 🔔 **subscribe* for more hands-on Angular tutorials.

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