Harness Infrastructure Provisioners optimize the deployment of Azure resources using ARM templates, facilitating dynamic, repeatable, and idempotent infrastructure setups while eliminating manual scripting and portal navigation. ARM templates, a feature of Azure Resource Manager (ARM), use declarative syntax to define and deploy infrastructure, offering benefits such as repeatability and idempotency, ensuring consistent environments across development and production with support for parallel deployments. These templates utilize JSON syntax and include parameters, variables, user-defined functions, resources, and outputs to manage deployment processes efficiently. Harness supports both inline and remote ARM provisioners, allowing templates to be stored locally or fetched from a Git repository, with the deployment process involving a Manager and Delegate to handle template rendering and execution. The blog details the deployment flow for both inline and remote templates, emphasizing the role of the Manager in resolving Harness variables, with future posts promising insights into variable usage and rollback support within the Harness framework.