NestJS Core Guide

NestJS Core Guide

Why does your Node.js code only get more complex over time?

This course provides a clear answer to that question.

This course is not just a simple NestJS feature tutorial. It's a 'core principles guide' that dives deep into how Express's flexibility can hinder maintenance, and why architectural principles like object-oriented programming, dependency injection (DI), and modularization adopted by NestJS have become the standard for modern backend development. Build real APIs hands-on and master NestJS's design philosophy at the code level.

Now it's time to leap beyond 'copy-paste' development and become a developer who 'designs' architecture.

🤔Why should you learn NestJS?

From top-tier domestic companies like Coupang, Toss, Naver, Kakao, and Baedal Minjok to the fastest-growing startups like Wrtn, Inflearn, and Wanted, why is everyone choosing NestJS?

The reason is clear. NestJS goes beyond being simply a 'popular' framework—it's the most powerful tool that can reliably solve complex business requirements.

• Systematic Architecture: Even as code grows longer and functionality becomes more complex, it won't get tangled like spaghetti. A clear, module-based structure dramatically reduces maintenance costs for large-scale applications.

• Powerful Stability: Designed based on TypeScript, it prevents numerous errors that could occur at runtime during the development stage. This directly translates to service stability.

• Superior Development Productivity: Provides tools that maximize developer productivity by default, such as dependency injection (DI) and built-in testing utilities, allowing you to focus solely on business logic rather than repetitive tasks.

Ultimately, learning NestJS is not simply about learning one technology. It means following the technology trends that have become mainstream in the market and acquiring the 'scalable and stable software design capabilities' that top companies demand. Learning NestJS now is the most solid investment in your career.

📚 You will learn this content

🎯 Reasons Why You Should Take This Course

1. Depth of Understanding Principles

Just blindly copying code won't make it truly yours. By answering the question 'Why?', I'll help you properly understand how NestJS works.

2. Density packed with only the essentials

I've kept only the most important things. I designed it to contain only the core essentials needed for practical work, so you can maintain motivation and complete the entire course without getting exhausted.

3. Experience closest to real-world practice

Simple practice code is meaningless. We'll build your 'real skills' through projects that incorporate the actual flow and structure of professional work environments.

✨ When you complete the course, here's how you'll change!

• You can confidently explain and utilize NestJS architecture.

• You will have a bulletin board API server that you can confidently add to your portfolio.

• You can write stable and predictable backend code using TypeScript.

• Through Swagger, you can automate API documentation and enable smooth communication with frontend developers.

This course goes beyond simple knowledge transfer and guides you on the path to becoming 'a developer who solves problems independently and grows continuously.'

📈 I recommend this course to these people

Pre-enrollment Notes