Changes

We're going to set up a virtual machine in AWS now so you can start to get used to the process. You'll be repeating this several times during the course, try to learn a little more about it each time you do it.

A '''security group''' is a fundamental concept in AWS. It's not completely clear what it is. The closest thing you would have seen that's similar is a set of iptables rules. You can assign the security group (this set of rules) to one or more virtual machines.

[[File:AWSCreateSecurityGroup.png|800px|border|center]]

* Instance == VM. AMI == VM disk image.