Compute instance vocabulary.
EC2
Elastic Compute Cloud virtual servers.
AMI
Amazon Machine Image template for instances.
Instance type
CPU/memory/network size family.
Security group
Virtual firewall for instances.
Key pair
SSH/RDP credentials for access.
Elastic IP
Static public IPv4 address.
Auto Scaling
Adjust instance count automatically.
Load balancer
Distribute traffic across targets.
User data
Startup script on first boot.
Spot instances
Spare capacity at discount; can be interrupted.
Reserved instances
Commit for lower compute price.
Dedicated host
Physical server for compliance needs.
Placement group
Control instance placement strategy.
Hibernate
Save RAM to disk and resume later.