Cloud Computing – Types of Services
Cloud computing means using the internet to access computing resources (servers, storage, software, etc.) instead of relying on local computers or servers.
There are 3 main types of cloud services:
1. IaaS (Infrastructure as a Service)
- What it is:
Provides virtual servers, storage, and networking. It’s like renting IT infrastructure instead of buying physical hardware. - Example:
Amazon Web Services (AWS EC2) – businesses rent cloud servers to run apps without managing physical machines.
2. PaaS (Platform as a Service)
- What it is:
Provides a ready-to-use platform for developers to build, test, and deploy apps. No need to manage servers or operating systems. - Example:
Google App Engine – developers can directly build and launch applications on Google’s platform.
3. SaaS (Software as a Service)
- What it is:
Ready-made software that you can use over the internet without installation or maintenance. - Example:
Google Workspace (Gmail, Google Docs, Drive) – users simply log in and use the software online.
✅ Quick Recap (Simple Table)
| Service | Purpose | Example |
|---|---|---|
| IaaS | Rent infrastructure (servers, storage) | AWS EC2 |
| PaaS | Build & deploy apps on a platform | Google App Engine |
| SaaS | Use software directly via internet | Google Workspace / Microsoft 365 |
👉 One-line Summary:
- IaaS = Rent infrastructure
- PaaS = Platform for developers
- SaaS = Ready-to-use software