What is cloud computing and explain its service models (IaaS, PaaS, SaaS)?

☁️ Cloud Development• 9/21/2025
Understanding cloud computing basics and different service models with real-world examples.

Cloud Computing Overview

What is Cloud Computing?

Cloud computing is the delivery of computing services (servers, storage, databases, networking, software, analytics, and more) over the Internet ("the cloud").

Service Models

  • IaaS: Virtualized hardware (e.g., AWS EC2, Azure VMs).
  • PaaS: Platforms for app deployment (e.g., Google App Engine, AWS Elastic Beanstalk).
  • SaaS: Fully managed applications (e.g., Gmail, Slack).

Pros

  • Scalability
  • Cost savings
  • Global reach

Cons

  • Vendor lock-in
  • Limited control in SaaS
By: System Admin