As someone who has spent a long time in network and endpoint security and then moved to cloud security, I can sympathize with people with security backgrounds who want to learn more about the cloud and cloud security concepts. AWS, EC2, CMK, KMS, IAM, SQS, etc.? It can seem like a big alphabet soup of unfamiliar acronyms. And lots of questions come up. How can I know whether a cloud provider encrypts a service by default or if I must specify it? What is the difference between a queue and a topic? Does CMK stand for customer-managed key or customer master key?