---
AWSTemplateFormatVersion: "2010-09-09"
Parameters:
  myEnvironment:
    Type: String
Conditions:
  isProduction: !Equals [!Ref myEnvironment, 'prod']
  isPrimaryAndProduction:
    Fn::And:
    - Condition: isProduction
    - Condition: isPrimary   # missing is Primary
Resources: {}