Amazon EC2
#25 · Level 1 · Core services · ComputeConcept
Section titled “Concept”Amazon EC2 is a computer (virtual server) you rent in the cloud. Each running server is called an instance. You choose an instance type based on how much CPU and memory you need, and the operating system and software are set by an AMI (Amazon Machine Image). An instance runs in a Subnet of a VPC, and a Security Group controls its traffic. It usually uses EBS as its disk, and together with Load Balancers and Auto Scaling you can build large systems.
Simple example
Section titled “Simple example”Renting a flat instead of buying a house. If you need a little space, you rent a small flat; when your family grows, a bigger one. You pay rent only for as long as you stay.
Why it’s needed
Section titled “Why it’s needed”You get a server within minutes. No buying, installing or repairing.
Where it’s used
Section titled “Where it’s used”Running any software — websites, APIs, game servers.
Key terms
Section titled “Key terms”| English | Simple meaning |
|---|---|
| Instance | One running server |
| Instance Type | The server’s size (how much CPU and RAM) |
| AMI | A ready-made template for a server, for example with Windows or Linux |
Azure equivalent
Section titled “Azure equivalent”Azure Virtual Machines
Related
Section titled “Related”Amazon EBS · Security Group · Amazon EC2 Auto Scaling
Learn more
Section titled “Learn more”For details and the latest information, see the official documentation: