How to activate and run an Ansible playbook for task automation?

To activate and run an Ansible playbook, you need to:

1. Ensure Ansible is installed and configured.
2. Have a playbook — a YAML file describing tasks.
3. Run the command:

ansible-playbook path_to_playbook.yml

For example:

ansible-playbook site.yml

Optionally, specify inventory, user, and additional parameters:

ansible-playbook -i inventory.ini -u user site.yml

The playbook will sequentially execute the described tasks on the specified hosts, automating configuration and deployment.