Solved: Need to vend resource to 100+ Azure subscriptions via pipeline, but Terraform kicking off about providers

🚀 Executive Summary TL;DR: Terraform struggles with provider configuration errors when deploying resources to numerous Azure subscriptions via for\_each loops because providers must be configured before resource evaluation. The article outlines three solutions: a quick shell script shim, the idiomatic Terraform provider aliasing, and a robust fan-out pipeline architecture for enterprise-scale deployments. 🎯 Key Takeaways Terraform’s dependency graph requires provider configuration *before* resource evaluation, causing conflicts when for\_each attempts to dynamically assign subscription IDs to a single provider. Provider aliasing enables defining distinct azurerm provider instances for each target Azure subscription, allowing resources to explicitly reference the correct provider via the provider meta-argument. For large-scale, complex environments, a fan-out/fan-in pipeline architecture, where an orchestrator triggers separate child pipelines for each subscription, provides superior is