This is a subjective review. The book was provided to me by Gilbut Publishing as part of their reviewer program.

IT Infrastructure Structures and Technologies, Illustrated — The Whole Map of Infrastructure in One Book

1. Why I Picked It Up

I read IT Infrastructure Structures and Technologies, Illustrated (Korean edition from Gilbut, written by Shinichi Tsurunaga et al., translated by Seonghun Kim). When you write code for a living, you somehow manage to get the code written — but where and how it actually runs (servers, networks, the cloud, deployment, incident response) always stayed blurry for me. I knew each piece more or less, but how they interlocked never quite came together. I picked this up to fill that blank.

2. How the Book Flows

The book starts at the physical layer and runs through networks, servers, the cloud, web systems, operations, and incident response in a single continuous line. Rather than explaining each infrastructure technology in isolation, it's put together to show how they connect and keep each other running.

Just as the title says, diagrams are at the center. From physical elements like communication cables to web systems, the cloud, security, and failure countermeasures, it works through concepts that would feel impenetrable in prose alone. Parts you'd skim past thinking "what does that even mean" fall into place once you see the diagram: "ah, it flows from here to here."

3. Why Infrastructure Fundamentals in the Age of AI

These days you can ask an AI and get deployment scripts, config files, and most of your code. But that's exactly why I keep thinking we need people who understand the overall structure of infrastructure. When something blows up — the service slows down, requests stop coming in, one server dies — even if you're asking an AI about it, pinpointing where things went sideways still requires having the whole map in your head.

What's good about this book is that it draws that map for you. It doesn't teach specific commands or tool usage; it explains why a system looks the way it does and what role each element plays from its position. That kind of principle-level understanding outlives the tools. The faster AI hands you answers, the more it matters to have an eye for whether the answer is right — and this book leans toward training that eye.

4. What I Liked: Scattered Concepts Get Connected

The best part is the "connection" I mentioned above. Servers, databases, networks, and deployment all feel like strangers to each other when you first encounter them, but this book places them inside one infrastructure flow. Thanks to that, "how does this request leave the client, pass through which devices, and come back as a response" becomes a single line you can trace.

The other thing that stood out: many infrastructure books focus on "how to build it," and this one goes past that. It covers operations, patch management, log analysis, alerting, and incident response — the things that happen while a system is alive and moving in the field. Showing not just how to build it but how to keep it running gave the book more of the temperature of real work.

It also reads lightly. You don't have to sit down and go cover to cover; you can flip open just the chapter you're curious about and skim the diagrams and still follow it. It has the character of a handbook — the kind of book you keep nearby and reopen at the relevant page when you need it.

5. What Fell Short: Cover This Much Ground and You Fill In the Depth Yourself

There are downsides too. Packing such a wide range into one volume means each topic stays focused on the "big picture" and the "concept." So if you want to dig deep into a specific technology or get hands-on practice, this book alone won't be enough and you'll need other material. It's a map that orients you on the concepts, not a workbook where you pick up a shovel and dig.

And since it's a translated work, some of the examples and context assume a Japanese environment, so there are passages that don't map 1:1 onto the Korean cloud and service landscape. That doesn't get in the way of understanding the broad principles, but the sense of "these options are also common here these days" is something the reader has to supply.

6. Who I'd Recommend It To

It suits someone who has already started working in IT — development or operations — but for whom everything outside their own area has always been fog, rather than a complete beginner. A frontend or backend developer curious about servers, networks, and deployment structure; someone new to the field who wants the whole picture first; someone who has heard the infrastructure vocabulary but never sorted out how the pieces tangle together. For people like that, this book puts a map in their hand.

Conversely, if you've already worked deeply with infrastructure, the early and middle chapters may feel like review. In that case you're better off focusing on the operations, incident response, and security sections.

7. One-Line Verdict

An introductory book that connects scattered infrastructure concepts one diagram at a time, until you can picture the whole map of an IT system in your head. In an age where AI does a lot of the work for you, it's a book on fundamentals that has become more necessary, not less.