From my perspective, a devops person (in the context of AWS) is someone who, in addition to coding, knows how to monitor and configure all the AWS services. E.g

From my perspective, a devops person (in the context of AWS) is someone who, in addition to coding, knows how to monitor and configure all the AWS services. E.g. they know how to provision right amount of DynamoDB capacity for the application, setup CloudWatch alarms and so on. Every individual developer might not know all that stuff, especially if the company is just starting to migrate to the cloud. Also, specific devops people might need to be named as responsible for responding to alarms.