IaaS (Infrastructure as a Service)
Infrastructure as a Service
A service that lets you rent IT infrastructure such as servers and networks over the internet.
In Simple Terms
IaaS lets you rent the hardware and network resources needed to run computers over the internet, paying only for what you use. For example, instead of buying a physical server, you can run a server online and host a website without owning any equipment. Many systems are operated using resources from remote data centers rather than being built on local machines.
Behind the Name
IaaS stands for Infrastructure as a Service. "Infrastructure" refers to the fundamental computing resources — servers, storage, and networks — that form the base layer of any IT system. "As a Service" means these resources are delivered over the internet on demand, rather than physically owned.
Take a Closer Look!
IaaS is a service that rents out infrastructure components — CPU, memory, and storage — over the internet.
Physical computing resources are delivered as virtual components you can access on demand.
To put it simply, it's like renting a bare-bones server.
You choose the operating system and install applications yourself, giving you the freedom to configure everything the way you want.
Because you don't need to purchase physical hardware, upfront costs are low and you can get started quickly.
When traffic spikes, you can scale up capacity — and scale back down when things quiet down.
The trade-off is that you're responsible for configuration and security management after setup.
It requires technical knowledge, but the high degree of customization makes IaaS widely used for large-scale system development and running custom applications.