How to arrange structure for the case multiple projects

According to Ansible Configuration Settings,

Changes can be made and used in a configuration file which will be searched for in the following order:

  • ANSIBLE_CONFIG (environment variable if set)
  • ansible.cfg (in the current directory)
  • ~/.ansible.cfg (in the home directory)
  • /etc/ansible/ansible.cfg

Ansible will process the above list and use the first file found, all others are ignored.