This document discusses how Vagrant was implemented at Wingify Engineering to help establish a DevOps culture. Previously, Wingify had issues with environments not matching production, difficult setups, and isolation between devs and ops. Vagrant provided developers similar environments to production using the same OS and configuration management. It simplified management through tools like "vagrant up", "vagrant ssh", and "vagrant destroy". This improved testing and reduced issues in production. It also improved collaboration by allowing ops to test configurations and devs to better understand infrastructure. Overall Vagrant helped establish closer alignment between devs and ops through shared responsibility of infrastructure.