A Terraform child module is great to gather code that will deploy a specific service based on your needs, for instance Azure Kubernetes Service (AKS) or virtual machines. At the bare minimum, AKS can be a deployment of one node pool but at the other end it might be several pools, identity management, choices about versioning, and much more. A virtual machine can have several data disks, be backup enabled, have anywhere from one to several network interfaces, and there is even a unique resource if it's a Windows machine or Linux. Things get complicated pretty quickly.

This talk is based on battle hardened modules, which helps you adhere to best practices and standards, while is flexible enough to break patterns when you need it. For this session we will not be looking at slides, but actual code. We will deep dive into some of the functions and expressions that Terraform has to offer, so there should be something for everyone in this talk.

Target audience is Terraform professionals or individuals with prior knowledge of Terraform. This is a presentation with no slides, everything is shown through actual code. Preferred session length is 30 minutes, 45 with questions.