AWS Intermediate/Practical (Security and Availability) for Non-Majors

I have created an 'AWS Intermediate/Practical' course that is easy to understand even for non-majors and can be applied immediately in the field!

(5.0) 55 reviews

740 learners

Level Basic

Course period Unlimited

AWS
AWS
devops
devops
infrastructure
infrastructure
vpc
vpc
Architecture
Architecture
AWS
AWS
devops
devops
infrastructure
infrastructure
vpc
vpc
Architecture
Architecture

Reviews from Early Learners

Reviews from Early Learners

5.0

5.0

Michael Scott

100% enrolled

I completed all the intermediate courses following the introductory courses. I now have a clear understanding of the roles and connection relationships of AWS network components. Thank you.

5.0

cypoba2

60% enrolled

I'm a major in this field, but I didn't have a clear understanding of the terminology and concepts. However, your easy explanations help me understand everything perfectly. By learning the theory and doing the practical exercises, I was able to gain a clear understanding. Totally recommend this course!!

5.0

smathj

100% enrolled

This Chuseok, I feel like I've been continuously learning with instructor Jaeseong, and through this AWS course, I experienced "Amazon Web Services" which allows you to easily do on the web what you used to do by typing config commands on routers and switches in actual networks... The kind explanations and multiple repetitions were so good. I'll continue with Jaeseong's next lecture since there's still some holiday time left!

What you will gain after the course

  • How to configure a VPC network essential for service operations

  • Methods for improving security using Private Subnets

  • How to prevent server failure using Availability Zones

  • How to configure security groups using the principle of least privilege

  • AWS infrastructure architectures frequently used in the industry

  • VPC, Subnet, Internet Gateway, NAT Gateway, Route Table


🥹 I sincerely thank all the students who supported me 🥹

It has already been a year since I created the introductory AWS course. Before first launching the course, I had many worries, such as whether my explanations were too difficult or what I would do if the students weren't satisfied.

Fortunately, many people took the AWS introductory course, and I remember breathing a sigh of relief after hearing feedback that they were able to understand AWS easily and apply it in practice.

And thanks to the students who cheered me on and asked me to keep creating courses, I gained the confidence to create this Intermediate AWS course as well.

In this intermediate AWS course, I will teach you how to improve network security using VPC and how to build infrastructure that increases availability and reduces the probability of server failure.

In the professional world, security is crucial, so AWS infrastructure is essentially built by establishing a VPC. The fact that VPCs are used in the field means that you must understand the concepts of VPC to have an advantage in employment and to quickly adapt to tasks once you are hired.

In this lecture, I won't just show you how to build a VPC and leave it at that; I will help you understand each individual concept required to build a VPC so that you can apply them to your own project situations. Then, using those concepts, we will build a VPC in the same way it is done in the industry.

I sincerely hope that through this course, you will be able to understand and handle AWS with more depth, ultimately becoming a developer recognized in the industry. I'll see you in the course.



✨ 4 Key Points I Focused on While Creating This Course

In the field of development, it is important to prioritize learning knowledge that can be used in the workplace—that is, techniques that are frequently utilized in practice. Therefore, I have structured the course using only concepts that are frequently used in the industry.

If you don't know how to apply what you've learned in practice after finishing the course, then it's a poorly made course. I have structured this course so that you can immediately apply the concepts you've learned in real-world situations after completing it.

I felt that if you couldn't apply what you learned in practice even after finishing the course, it was a poorly made course. I tried to structure it as a practical course that can be applied immediately in the field, rather than an academic approach of studying theory deeply.

I didn't create this course by simply showing usage or implementation methods without any explanation. I will provide theoretical explanations so that you can build while understanding the principles and concepts. This way, you will be able to apply what you've learned to your own project situations.

👍 This course is perfect for people like this!

Those who are having difficulty with advanced AWS learning
after watching YouTube or blogs

Those who are from non-major backgrounds
and are slow to understand
difficult concepts and terminology

Those who want to directly
introduce and utilize AWS
in the field

🙊 What will you achieve after completing this course?

You will be able to configure a secure network using AWS VPC. Additionally, you will learn how to increase availability and reduce the probability of server failure.

🍡 Preview

'What is an Internet Gateway?' during the lesson

'[Practice] Modifying the Security Group of EC2 (Bastion Host)' during class

'[Practice] Creating an Internet Gateway' during class

Notes

If there are any parts you don't understand while studying, please feel free to ask questions immediately using the Q&A board or the 1:1 open chat room😊

🚨 Be sure to check what kind of person the educator is!

If you meet the wrong doctor, you may face death because your illness cannot be cured at that moment. However, death ends with the pain of that moment. But if you meet the wrong teacher and receive the wrong education, you will suffer for the rest of your life.

Due to poor education, you may end up at a company you don't want, receive a lower salary than expected, and suffer for the rest of your life as a result. Not only that, but the poor education you received can be passed down to your children as a cycle of flawed education.

I believe that education can change a person's life in a truly positive way, but on the other hand, it can also completely ruin a person's life. That is why I believe education carries such a heavy responsibility.

Therefore, please check who the educator is, what kind of person they are, and what path they have taken, and make a careful decision.

👋 Hello!
I'm finally introducing myself ( ⸝⸝•ᴗ•⸝⸝ )੭⁾⁾

Hello!

I started studying development as a non-major. Somehow, I've already become a developer in my 6th year! Recently, I served as CTO at two companies while working as a developer. Whenever I had spare time, I've been conducting coding lectures, corporate development consulting, and speaking engagements.

The number of students I've taught has already exceeded 24,000 (as of July 2025)! As I feel every time I teach my many students, I can never forget the sense of fulfillment that comes from education, so I plan to continue providing courses on Inflearn.
(* Produced successful applicants for Kakao Pay, Yanolja, and Woowa Brothers among students)

Just as I received a lot of help when I was going through difficult and challenging times, I wanted to become someone who could also help many others. I felt the most proud and happy when the value I created through development had a positive impact on others.

For these reasons, I hope that by giving and sharing what I have worked hard to achieve, those people can live a slightly better life.

Thank you!

🏆 Course Best Review

** This is a review written for the previously produced <AWS Introduction/Practice for Non-Majors>.


🚌 Feeling overwhelmed about which order to take the courses in?

Please refer to '[2026] Essential Curriculum for Getting a Job as a Backend Developer (IT Service Companies)'!



🐶 Get course discounts with the roadmap

➡ Deploying services with AWS · Nginx · CI/CD
(https://inf.run/XXuYG)

➡ [AWS Beginner to Intermediate] A collection of AWS lectures that can be applied immediately in practice(https://inf.run/kLjW9)

➡ AWS Beginner~Intermediate + AWS Solutions Architect Associate
(https://inf.run/woqg1)

Recommended for
these people

Who is this course right for?

  • Those who are preparing for employment or a career move as a backend developer at an IT service company

  • Developers who need to design infrastructure considering security and availability

  • Those who need to operate services directly using AWS

  • Those who are preparing for a career as a DevOps engineer

Need to know before starting?

  • Basic AWS knowledge (EC2, RDS, ELB)

Hello
This is jscode

33,218

Learners

2,568

Reviews

805

Answers

4.9

Rating

20

Courses

 

[Sites]
Go to Youtube
Go to LinkedIn

 

[Career]
Current) JSCODE - Lead Mentor, CEO
Former) Tripod Lab Co., Ltd. - CTO
Former) Only One Universe Co., Ltd. - CTO
Former) DALY - CTO
Former) Teammate - CEO

 

[Books]

『Do it! JSCODE's Introduction to AWS』, Easys Publishing (2025.05)

 

[ETC]
- Corporate development consulting and coding education activities

More

Co-instructor

Curriculum

All

59 lectures ∙ (4hr 4min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

55 reviews

5.0

55 reviews

  • bye04140947님의 프로필 이미지
    bye04140947

    Reviews 7

    Average Rating 5.0

    5

    88% enrolled

    It was great to be able to learn about AWS concepts such as VPC, subnet, internet gateway, and routing table one by one. In particular, I was able to understand the criteria for configuring security group settings.

    • oliverkim4783님의 프로필 이미지
      oliverkim4783

      Reviews 5

      Average Rating 5.0

      5

      31% enrolled

      • acyc09092705님의 프로필 이미지
        acyc09092705

        Reviews 21

        Average Rating 5.0

        5

        100% enrolled

        I've come to leave a review after completing the entire jscode roadmap ~~ I was first shocked at how well I understood the AWS introductory course and CI/CD course, and how well I could apply and absorb the knowledge 😊😊 After taking all the courses within a month and studying with amazement each time, I'm finally leaving this review!! As a quasi-major, I had been anxiously studying specific concepts in a haphazard way through project activities without overall understanding, and hastily developing and debugging through blogs and searches without a solid foundation. But after taking Jaesung's courses, I realized that my study method was not efficient 😊😊 I truly consider you a benefactor in my development career The courses were neither excessive nor insufficient, really substantial and perfectly aligned with the course topics and goals, so I enjoyed every moment of listening. I loved that it saved time, was easy to understand, immediately applicable, and didn't make me anxious. Also, I could see how much time and passion you put into every course, always admiring how you covered compact yet detailed elements so well!! I've taken various courses, but unlike other instructors who teach while working full-time jobs, this course where you poured your passion solely into education had incredibly high satisfaction :) I hope you stay healthy always, and I would be grateful if you continue to produce future courses without overexertion 🙇🏻‍♂️

        • taeho77028354님의 프로필 이미지
          taeho77028354

          Reviews 2

          Average Rating 5.0

          Edited

          5

          100% enrolled

          Following the beginner course, this was a great help in grasping the overall big picture.

          • helpme님의 프로필 이미지
            helpme

            Reviews 4

            Average Rating 5.0

            5

            31% enrolled

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