You use Declarative Automation Bundles to manage two jobs and an app.

The targets mapping defines environment-specific deployment configurations within one databricks.yml file. Development and production targets can apply different resource settings or exclusions while sharing the bundle’s common definitions. This allows the app to be deployed to both environments and limits the development deployment to the required job without maintaining duplicate configuration files. Separate YAML files would duplicate shared settings and increase maintenance effort. The resources mapping declares jobs, pipelines, apps, and other Databricks resources but does not independently provide environment-specific deployment behavior. Variables provide reusable values and substitutions; they are not the primary mechanism for defining deployment environments. Declarative Automation Bundle targets are explicitly intended to model configurations such as development, staging, and production in a single bundle. Microsoft Learn