IaaS (Infrastructure as a Service)

● Virtualized computing resources (VMs, storage, networking)

● Users control infrastructure, the provider manages physical hardware

● Example: Amazon EC2, Microsoft Azure Virtual Machines

● Real-world: Hosting a web app on AWS EC2

CaaS (Container as a Service)

● Deploy, manage, and scale containerized applications

● Provider manages infrastructure and container orchestration

● Example: Google Kubernetes Engine, Amazon ECS, EKS, Fargate

● Real-world: Migrating a monolithic app to microservices using Google Kubernetes

Engine

PaaS (Platform as a Service)

● Build, deploy, and manage applications without worrying about infrastructure

● Provider manages infrastructure, servers, networking, OS, etc.

● Example: Heroku, Microsoft Azure App Service

● Real-world: Developing a web app on Heroku 

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