You need to spin up your machine in US West Oregon Region to use the AMI. Anyone can run a machine in any EC2 regions. But you need to remember where you spin up your instances, so you can stop it when not using it. EC2 dashboard has no “Global” View. You have to choose the view from the dropdown in the top right. So be careful and I would suggest you just stick to US West Oregon for all instances. US Regions typically have the lowest cost in AWS - https://aws.amazon.com/ec2/pricing/on-demand/