"Development should mirror production as much as possible." While the adage has been with us for some time, virtualization has made it much, much easier to create and destroy environments for development, testing, or production work. This talk will focus on how to create development environments for server-side or web applications that adhere to their production counterparts while maintaining maximum ease of development. There are many tools for this task, and the purpose of this talk is to teach the concepts, not to promote a given tool. However, examples must use something, so I'll be relying on Vagrant and Ansible.