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: The video has a clear, timed outline. For example, it covers "What is NestJS" at 00:00:00 , "Creating a Controller" at 00:07:00 , and "Creating a Service" at 00:11:07 . This structured approach allows you to follow along step by step. Nestjs Fundamentals Course Free Download

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Using built-in Exception Filters to return clean, consistent error messages to frontend clients.

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Modules are TypeScript classes decorated with @Module() . They serve as boundary lines to encapsulate code logic. Every app has at least one root module ( app.module.ts ), which acts as the starting block for drawing the dependency graph. 2. Controllers (The Routing Layer)

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