Why The Cloud Exists
Buying servers is expensive. The cloud lets businesses rent computing power when needed.
Need servers → Rent servers
Primer / Resources / About
Learn the cloud before the marketing buzzwords.
The cloud is simply computing resources delivered over the internet.
Primer
1. Rent instead of buy
Cloud services allow you to rent computing resources when needed.
Server
Storage
Database
Network
2. Resources scale
Cloud systems can grow and shrink as demand changes.
Small
Medium
Large
Enterprise
3. Services replace hardware
Many businesses no longer maintain physical servers on-site.
Cloud VM
Cloud DB
Cloud Storage
4. Availability matters
Cloud systems are designed to remain available and recover from failures.
Backup
Redundancy
Failover
Recovery
Resources
About
About Cloud Computing
Cloud computing provides computing resources over the internet.
Organizations rent servers, storage, networking, and services as needed.
Cloud systems reduce the need to purchase and maintain physical hardware.
Most modern websites and applications rely on cloud services.
Compute
Virtual servers and processing power.
Storage
Files and backups stored online.
Networking
Traffic movement between systems.
Services
Managed databases, email, AI, and more.
Lecture + worksheet
Job-ready Cloud practice cards
The cloud is not magic. It is somebody else's computers. Learn why the cloud exists, what problems it solves, what risks it creates, and how professionals survive.
✓ Lesson 1 Free • No Login Required
Somebody Else's Computer
The cloud feels virtual, but real computers still exist somewhere in a real data center.
Cloud ≠ magic
From Server Room To Data Center
Businesses moved from local hardware to massive shared cloud infrastructure.
Office server → Data center
Elasticity Changes Everything
Cloud systems can grow and shrink much faster than traditional hardware.
Need more? Add more.
The Bill Never Sleeps
Cloud resources cost money every hour they run.
Running = Billing
Cloud Outages Are Real
Even the largest providers experience failures. The cloud reduces risk but does not remove risk.
Cloud ≠ invincible
Shared Responsibility
The provider secures some things. You still secure your applications, accounts, and data.
Provider + Customer
Backups Still Matter
Cloud storage does not replace backup strategy. Deleting data is still deleting data.
Cloud storage ≠ backup
Multi-Cloud Sounds Easy
Using multiple cloud providers sounds simple until complexity arrives.
More clouds = more moving parts
The Cloud Is A Tool Not A Destination
The goal is solving business problems. The cloud is one way to do that.
Tool ≠ Goal
Use cloud services intelligently instead of fearing them.
The goal is not to become a cloud architect. The goal is to understand the services, terminology, and decisions that power modern websites and applications.