What is IaaS?

IaaS (Infrastructure as a Service) is a cloud computing model where the provider offers basic computing infrastructure over the internet.

Main characteristics:

• Virtualized resources: Access to virtual machines, storage, networks.
• Client management: The user manages the operating system, applications, and data on the rented infrastructure.
• Scalability: Resources can be easily scaled according to needs.
• Pay-as-you-go: Payment is made for the resources actually used (often by the hour or minute).

Examples of IaaS services:

• Virtual Machines (VMs)
• Block Storage
• Object Storage
• Virtual Networks

Examples of IaaS providers:

• Amazon Web Services (AWS) EC2
• Microsoft Azure Virtual Machines
• Google Compute Engine (GCE)

Compared to PaaS and SaaS models, IaaS provides the client with the greatest control but also requires more responsibility for managing the infrastructure.