How to use YAML nesting, lists, and comments in Ansible playbooks

To automate with Ansible, you must be familiar with YAML, the human-readable language used to define the logic in Ansible playbooks. YAML stands for “Yet Another Markup Language” or “YAML Ain’t Markup Language” (a recursive acronym). YAML is often used for writing configuration files. Although YAML is considered simple and easy to understand, the YAML syntax can be quite confusing. This article digs a little deeper into some YAML basics.