What are callback plugins in Ansible?

1.	What are callback plugins in Ansible?
Answer» Callback plugins basically control most of the output we see while running cmd programs. But it can also be used to add ADDITIONAL output. For example log_plays callback is used to record playbook events to a log file, and mail callback is used to send email on playbook failures. We can also add custom callback plugins by DROPPING them into a callback_plugins directory adjacent to play, inside a role, or by PUTTING it in one of the callback directory SOURCES configured in ansible.cfg.

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