Inside a
server rack.
Compute, storage and connections.
Next in the seriesTHE BEGINNER'S GUIDE TO DIGITAL INFRASTRUCTURE
The cloud has
an address.
Discover the buildings, systems and people that keep our digital world running. One clear explanation at a time.
No engineering degree required. Just curiosity.
INSIDE THE CLOUD● SYSTEMS CONNECTED
01 / COMPUTE
02 / STORAGE
03 / NETWORK
↯ POWER≋ COOLING↔ CONNECTIVITY
Conceptual illustration · not a facility blueprint
START WITH WHY.
A photo. A payment. A video call.
Behind every digital moment is a physical system.
LESSON 01 / FOUNDATIONS
Follow one photo
into the cloud.
A short animated walkthrough.
Use the chapters to explore at your own pace.
01 / 06INTERACTIVE INTRODUCTION
▣
01 — YOUR PHONE
You tap “back up”.
00:00 / 01:30
01
The cloud is physical.
Digital services depend on real computers, networks and facilities.
02
Systems work together.
Compute, storage and networking depend on supporting infrastructure.
03
People make it reliable.
Monitoring, maintenance and careful changes are part of the story.
Read the lesson & sources ↗
Research references: IBM: What is a data center? · AWS: What is cloud storage? · Google: Data center efficiency. Accessed 19 October 2026. The photo journey is an original simplified teaching example, not a reconstruction of a particular provider's system.
Download the lesson transcript ↓QUICK CHECK
What does “in the cloud” mean?
BUILD YOUR UNDERSTANDING
Your first steps.
A clear path forward.
Start with the fundamentals.
Then connect the dots.
01 · START HEREWhat is a
02 · PLANNED 03 · PLANNEDFrom the grid
04 · PLANNEDWhere does
What is a
data center?
Follow a photo into the cloud.
Explore lesson ↗Inside a
From the grid
to the chip.
The journey of electricity.
In the curriculumWhere does
the heat go?
Understand the cooling loop.
In the curriculumCOMING LATER
Redundancy & resilience
The people behind uptime
From mainframes to AI
Critical infrastructure stories
FIELD NOTES / YOUR FIRST FIVE WORDS
Less jargon.
More understanding.
Good explanations start with a shared vocabulary.
Server +
A computer that provides a service to other computers or devices, such as responding to a request for a photo.
Rack +
A frame that holds equipment. A rack is furniture for the hardware, not itself a computer.
Network +
Connected devices and links that allow information to move between systems.
Cloud storage +
A service that lets you store and retrieve data using infrastructure operated by a provider.
Redundancy +
Additional capacity or paths intended to help a system continue through specified failures or maintenance. It is not a promise that nothing can go wrong.
BUILT FOR THE NEXT GENERATION
Everyone starts
with a question.
Data Centers with Mladen is a personal educational project by Mladen Mijakić. Our aim is to make data center knowledge approachable, practical and worth sharing — from your first day in the industry to a deeper understanding of the infrastructure around us.
Original explanations. Sources you can follow. Curiosity encouraged. This project is independent of any employer or client.