This is like renting a digital plot of land. You get the raw materials like storage and power, but you must build everything on top of it.

Infrastructure as a Service

Think of this as a pre-built workbench for creators. It provides the tools and space to build apps without worrying about the underlying machinery.

Platform as a Service

These are finished apps you use directly through your web browser. You don't build or install anything; you just log in and start working.

This represents traditional tech where you own everything. You provide the oven, the dough, the toppings, and the table yourself.

The store provides the prepared pizza, but you use your own oven and table. You manage the final cooking process yourself.

Someone else makes and bakes the pizza and brings it to your door. You only provide the table and the drinks to enjoy it.

You go to a restaurant where everything is provided for you. You simply sit down, eat, and pay for the service.

This refers to the basic parts of a computer, like the brain and the memory. In the cloud, these are rented as needed.

This explains who is in charge of security. The provider protects the building, while you protect the data you put inside it.

Major services like Amazon Web Services provide the raw power. Companies use them to run their own custom-built systems.

Tools like Google App Engine help developers publish websites quickly. They handle the background work so the coder can focus on the design.

Common apps like Gmail, Netflix, and Dropbox are perfect examples. You use the service without ever seeing the technical side.

The cloud lets you add more power instantly as your business grows. It is like instantly adding more seats to a restaurant when it gets crowded.

Picking a model depends on how much control you want. More control usually means more work for your technical team.