Naming convention for service groups

The answer is not very specific unfortunately, but for the majority of services:

• AWS Prefix - These are services that typically link or operate with other services. (AWS Cost Explorer, AWS IAM, AWS Budgets, AWS IAM, etc.)
• Amazon Prefix - These are services that function completely on their own. (Amazon RDS, Amazon SQS, Amazon EC2, etc.)

A single service on AWS may be defined as multiple (I/P/S/F)aaS interpretations, so most services are ambiguous to these terms.