This document summarizes configuration management tools and introduces Ansible. It notes that Puppet and bcfg2 are pull-based with custom authentication and performance issues, while Ansible is push-based using SSH keys, fast with no daemons. Ansible can be installed with pip and used immediately in one-shot mode or with playbooks for complete configuration management. Playbooks allow defining collections of actions like one-shot mode with notifications. The document concludes that Ansible can go from zero to production in minutes with no custom setup or dependencies.