Introduction to AWS Graviton: Understanding ARM-based Instances

An introductory course that makes the terminal less intimidating even for Linux beginners, teaching you how to view server logs, find files, and develop practical skills using just cd / ls / grep

It is perfectly fine if you have no prior programming experience. We will learn step-by-step, from environment setup to error troubleshooting and basic syntax, while building a working program in every single lecture. After completing the 10-lecture course, you will be able to design and implement simple programs on your own.

Learn cloud infrastructure automation technology using AWS and Terraform, and practice efficient infrastructure management and deployment. Manage AWS resources as code through Terraform, and learn how to deploy consistent infrastructure across various environments.

I have created an 'Nginx Introduction/Practical' course that is easy for non-majors to understand and can be applied immediately in practice!

I have created a 'Kubernetes Introduction/Practice' course that is easy for non-majors to understand and can be applied immediately in the field!

This course is an introductory lecture prepared for those who are new to Terraform, an infrastructure automation tool. Instead of repeatedly performing manual configurations in cloud environments, you can learn how to easily and quickly build and manage infrastructure using code. It is specifically designed with easy explanations and hands-on exercises that even non-majors can follow, so that beginners who are encountering the concept of IaC for the first time can understand it.

An introductory course tailored for beginners that systematically teaches you how to build AWS core services and infrastructure! You can naturally learn the basics of the cloud and how to use AWS through hands-on practice.

The author of "The Structure and Principles of Arm Architecture for System Software Development" will provide a solid foundation on TrustZone—the core of the latest Arm architectures (Armv8-A, Armv7-A) and the absolute fundamental of system software!

I have created an 'Introduction to Kafka' course that is easy for non-majors to understand and can be applied immediately in practice!

This course aims to build the complete understanding of Amazon Virtual Private Cloud (VPC) and Networking from grounds up where you will understand the AWS networking concepts to the depth not just theorotically but by actually performing hands-on exercises for all the networking components. This course will take your networking knowledge and experience to a level where you can confidently design and implement networking components on your own. And believe me, it's one of the most important skill to have to be successful in your AWS career.

Now I can analyze the Linux kernel too! The easiest kernel lecture among all Linux kernel courses.

If you want to work for a long time as a super developer who can handle the entire process of service development and operations alone, building a solid foundation in IT infrastructure knowledge is just as important as learning various programming languages!

Linux for Beginners: Mastering the Command Line. The ultimate course for Linux administration in corporate jobs. Unlock the power of the Linux operating system with this comprehensive beginner-friendly course. Whether new to IT or wanting to advance technical skills, this course will take one from zero to proficient in Linux fundamentals. Learn to navigate the command line, manage files and directories, handle permissions, and automate tasks with shell scripting. What You'll Learn: How to Navigate the Linux File System and Master the Command Line Managing users, groups, and file permissions for secure access Installing, updating, and removing software with package managers Basic system administration and troubleshooting skills With hands-on labs and real-world examples, you’ll quickly build confidence in managing Linux environments. By the end of this course, you’ll have a strong understanding of essential Linux concepts like file permissions, process management, and network configuration. Also, this course covers basic networking, disk management, and process monitoring. Whether you have a career goal in the realms of DevOps, cybersecurity, or cloud engineering, learn Linux today to make more career opportunities pop open in IT, DevOps, SRE, Support, IT helpdesk, IT Admin, cybersecurity, or software development! Practical Skills for Self-Confidence on Any Linux-based System Boost Your Tech Portfolio

It was created to solve the "overwhelming problem of not knowing where or how to start with Kubernetes." Based on hands-on experience operating financial infrastructure, it is designed to help you understand the actual build and operation flow rather than just simple theory. Through a learning process that covers the relationship with Docker, YAML, Pods, Deployments, and Services, learners will master Kubernetes not just as a "concept," but as a "usable skill."

I've created a cram course that will help you pass the AWS SAA-C03 (AWS Certified Solutions Architect - Associate) certification in just 2 weeks with only 163 questions!

The author of "Learning the Structure and Principles of the Linux Kernel Through Debugging" provides a thorough explanation of the core interrupt concepts of the latest Linux kernel (v6.1), which are most widely used in system software.

This course is designed to help learners build solid AWS cloud engineering and architecture skills through hands-on projects and practical demonstrations. Students will learn how to build secure AWS environments, manage scalable computing infrastructure using EC2 and Auto Scaling, configure networking via VPC and Load Balancers, and implement cloud-native storage and database solutions using S3, Aurora, and MySQL. Throughout the course, I will guide students step-by-step using hands-on labs, architectural explanations, and real-world deployment scenarios commonly used in modern cloud environments. I focus on simplifying complex AWS concepts into easy-to-understand lessons while helping students avoid common mistakes made during cloud deployment, security configuration, and infrastructure scaling. By the end of this course, students will not only gain the confidence to design secure, scalable, and cost-effective solutions on AWS but will also be prepared for the AWS Solutions Architect Associate certification exam.

This course focuses on solving the problem of getting stuck in interviews and practical work due to a lack of understanding of why certain structures and configurations are necessary, rather than just teaching how to configure NGINX. Based on experience evaluating numerous candidates as an interviewer for companies like Naver, Kakao, and Toss, I explain how to describe and utilize NGINX from the perspectives of performance, scalability, and operations through hands-on practice. The core of this course is to help you develop a mindset capable of tracing traffic flow and troubleshooting problems, rather than just memorizing configuration values.

I have created a 'Linux for Beginners' course that is easy for non-majors to understand and can be applied in practice immediately!

⚓ Kubernetes CKAD Certification! 🙇‍♀️Are you still hesitating? 🚢Board the Ilpro-ho! We will guide you through the optimal route.

In the era of Agentic AI, where is AI development headed? Now, competitiveness lies not in using a single AI model well, but in the ability to select the right model for the task and connect AI Agents with development tools to solve real-world problems. We are releasing the presentation videos from the Qwen Conference 2026, a global AI conference hosted by Alibaba Cloud, for free. From the Qwen 2.5 Max announcement and the "Future of Reasoning" panel featuring NVIDIA and Fireworks AI, to multimodal models expanding into video and voice, and cases of AI Agents deployed in actual practice beyond mere demonstrations. Discover the direction of the Agent era as envisioned by a company that builds the entire stack—from models to infrastructure and applications.