A package is a manifest that has been deployed to a specific environment (e.g., production, staging, US West, etc).
In Massdriver, naming conventions for cloud resources are managed for you. The package's identifier can be seen by hovering over the name. This will be the naming prefix for all resources created when this package is deployed.
Packages can also integrate monitors and alarms into Massdriver's notification system. In the example below, a number of Cloudwatch Alarms are visible for RDS Postgres.
Cloud resources created by the package are tracked within Massdriver. Below is a view of the resources created by the AWS EKS Cluster bundle.