※ Infrastructure Literacy 30: Basic Level covers the overall structure and basic roles of digital infrastructure. Detailed semiconductor concepts and infrastructure security will continue in Infrastructure Literacy 30: Advanced Level.

PART 1. The Overall Picture of Digital Infrastructure

#01. What Is Infrastructure?

Infrastructure, foundational facilities, digital infrastructure

#02. Where Do Digital Services Operate?

Client, server, internet

#03. What Is Digital Infrastructure Made Of?

Computing, connectivity, storage, deployment and delivery, operating environment

#04. Why Isn’t Improving Just One Part of the Infrastructure Enough?

Bottlenecks and Balance

#05. How Does Infrastructure Change as the Number of Users Grows?

Traffic, Scaling, Distribution

#06. Why Do Digital Services Need Computing Equipment?

Computing, Computation, Processing

#07. What Is a Server?

Server, Service, 24/7 Operation

#08. Why Are Semiconductors Essential to Infrastructure?

Semiconductors, CPU, GPU

#09. How Can Servers Handle More Work?

Scale Up, Scale Out, Server Scaling

#10. How Do Multiple Servers Work Together?

Cluster, Distributed Processing

PART 3. Connecting Infrastructure

#11. Why Do We Need Networks?

Network, Communication

#12. How Is the Internet Connected?

LAN, WAN, Internet

#13. How Does Data Move?

Packet, Data Transmission

#14. Why Does Internet Speed Vary?

Bandwidth, Latency

#15. How Is the World’s Internet Connected?

Fiber-Optic Cables, Submarine Cables, Internet Backbone

PART 4. Storage Infrastructure

#16. What Do Digital Services Store?

Data, File, Log

#17. What Is the Difference Between Memory and Storage?

RAM, SSD, HDD

#18. Is Storage Space Only Located Inside a Single Server?

Local Storage, Shared Storage, Network Storage

#19. Why Are Servers and Storage Separated?

Computing, Storage, Separation of Roles

#20. Why Is Data Stored in Multiple Locations?

Backup, Replication

PART 5. Infrastructure for Deployment and Delivery

#21. Where Should Servers Be Located?

Server Room, Computer Room

#22. What Is a Data Center?

Data Center, Rack

#23. What Is the Cloud?

Cloud, Computing Resources

#24. Can the Cloud Exist Without Data Centers?

Physical Infrastructure, Data Center, Cloud Service

#25. Should Companies Own Their Infrastructure?

On-Premises, Cloud

PART 6. Operating Environment

#26. Why Do Servers Use So Much Electricity?

Power, Power Supply

#27. Why Do Servers Need Continuous Cooling?

Heat, Cooling

#28. How Can a Service Keep Running When One Component Fails?

Redundancy, High Availability, Failover

#29. How Are Failures Detected and Recovered From?

Monitoring, Alert, Incident Response

#30. How Does a Complete Digital Service Come Together?

Computing, Connectivity, Storage, Deployment & Delivery, Operating Environment