This talk will cover automation of deploying, configuring and keeping in-sync the state of multiple systems using Ansible and Ansible-Semaphore  ,   The talk will cover:  
1. Basics of Ansible  and why
2. Basic playbook to configure ssh, sudo and install some packages 
3. Setting up and keeping in sync a web server configuration 
4. Ansible-Vault and Host-specific variables
5. Semaphore and cron-based ansible 
6. Concurrency if time permits