This document summarizes Brainly's use of Ansible for infrastructure automation. Key points include: - Brainly uses Ansible to configure over 1000 Linux containers running Debian and Ubuntu. - Ansible is used to automate configuration of services like Nagios monitoring, Apache, Erlang, Icinga, Corosync/Pacemaker, backups, firewalls and networking. - Roles, playbooks, policies and guidelines are stored in an Ansible repo to standardize processes and onboard new team members. - Ansible improved productivity, deployment speed and cooperation between dev and ops teams.