AWS Systems Manager gives you visibility and control of your infrastructure on AWS. Systems
Manager provides a unified user interface so you can view operational data from multiple AWS
services and allows you to automate operational tasks across your AWS resources.
AWS OpsWorks is a configuration management service that provides managed instances of Chef and
Puppet.
AWS Config is a fully-managed service that provides you with an AWS resource inventory,
configuration history, and configuration change notifications to enable security and regulatory
compliance.
Amazon CloudWatch is a monitoring service for AWS cloud resources and the applications you run on
AWS. You use CloudWatch for performance monitoring, not automating operational tasks.