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No more copy-paste configs. No more manual state management. Terraform just went component-based.
HashiCorp released native monorepo support and Terraform Stacks to GA on September 25, 2025. This is the biggest architectural shift since Terraform modules. Instead of directory-per-environment with duplicate configurations, you define components once and deploy multiple times with isolated state.
We explain components (lifecycle-aware resource groups in .tfstack.hcl files), deployments (isolated instances with separate state), orchestration rules (context-aware automated approvals), linked stacks (declarative cross-stack dependencies), migration paths from Terragrunt, and when platform teams should adopt.
NEWS SEGMENT:• Terraform Stacks + Monorepo (GA Sept 2025): Component-based architecture, orchestration rules, basic functionality in free tier https://www.hashicorp.com/blog/terraform-adds-native-monorepo-support-stack-component-configurations-and-more
• Pulumi IaC Including Terraform/HCL (Private Beta, GA Q1 2026): Direct Terraform state file support, native HCL, credits for HashiCorp costs https://www.pulumi.com/blog/all-iac-including-terraform-and-hcl/
• vLLM v0.13.0: 442 commits from 207 contributors, NVIDIA Blackwell Ultra support, DeepSeek optimizations (5.3% throughput gains) https://github.com/vllm-project/vllm/releases/tag/v0.13.0
• Amazon EC2 AZ ID API Support: Consistent Availability Zone IDs across all AWS accounts, eliminates manual zone mapping https://aws.amazon.com/about-aws/whats-new/2025/12/amazon-ec2-availability-zone-id-api-support/
• GPT-5.2-Codex (Dec 18, 2025): 56.4% SWE-Bench Pro, 64% Terminal-Bench 2.0, invite-only cybersecurity capabilities https://openai.com/index/gpt-5-2-codex/
LINKS:• Platform Engineering Playbook: https://platformengineeringplaybook.com• Episode Page: https://platformengineeringplaybook.com/podcasts/00064-terraform-stacks-native-monorepo• Full Script: https://github.com/platformengineeringorg/platform-engineering-playbook/blob/main/docs/podcasts/scripts/00064-terraform-stacks-native-monorepo.txt• Terraform Stacks Explained: https://www.hashicorp.com/blog/terraform-stacks-explained
#terraform #terraformstacks #hashicorp #iac #infrastructureascode #platformengineering #devops #terragrunt #pulumi
