Infrastructure as Code (IaC) has rapidly become a key part of cloud native engineering. The hard gained experience from writing software can be applied to infrastructure, but fundamental differences means some fundamental approached need to be reconsidered. This talk will explore the implications for test driven development and build pipelines applied to IaC. Jon Barber is an Engineer with Equal Experts. He has been paid to write software for over 30 years, and has spent most of his time recently in the platform engineering space. He’s a keen advocate of XP values and practices, and sees himself more as an engineer than craftsman.