ansible/docs/docsite/rst/user_guide/module_defaults_config.rst

Module Defaults Configuration

Ansible 2.7 adds a preview-status feature to group together modules that share common sets of parameters. This makes it easier to author playbooks making heavy use of API-based modules such as cloud modules. By default Ansible ships with groups for AWS and GCP modules that share parameters.

In a playbook, you can set module defaults for whole groups of modules, such as setting a common AWS region.

# example_play.yml
- hosts: localhost
  module_defaults:
    group/aws:
      region: us-west-2
  tasks:
  - aws_s3_bucket_facts:
  # now the region is shared between both facts modules
  - ec2_ami_facts:
      filters:
        name: 'RHEL*7.5*'