Product : AppScale, Eucalyptus/Current, 4.4.5
Feature : Virtual servers, Compute, Infrastructure Services
Content Owner:  Bhagyashri (Shri) Bhagvat
Summary
Virtual servers are called cloud instances (equivalent to EC2 instances in AWS)
Details
https://docs.eucalyptus.cloud/eucalyptus/4.4.5/index.html#user-guide/understanding_instances.html