If you’ve been following the HashiCorp ecosystem news this week, you’ve likely seen the writing on the wall. As of December 10, 2025, HashiCorp (now an IBM company) has officially announced the deprecation of the Cloud Development Kit for Terraform (CDKTF).

For many, this isn't a surprise… it’s a symptom.

Since the acquisition and the license changes that shook the community a couple of years ago, we’ve seen a steady narrowing of focus at HashiCorp. The deprecation of CDKTF is just the latest reminder that relying on a single vendor’s proprietary roadmap can leave your engineering team stranded.

Here is what happened, what it means for your team, and how you can future-proof your infrastructure strategy moving forward.

The News: CDKTF is Sunset

The announcement was blunt: CDKTF did not find "product-market fit at scale." Effective immediately, no further features or fixes will be shipped. The repository is archived.

HashiCorp’s official advice? "Migrate to HCL."

For teams that spent years building complex abstractions in TypeScript, Python, or Go to avoid writing raw HCL, this is a tough pill to swallow. You adopted CDKTF to bring the power of real programming languages to your infrastructure. Now, you are being told to go back to the very declarative syntax you tried to escape—or rewrite everything in AWS CDK, locking you into a single cloud provider.

The Vendor Lock-in Trap

At env zero, we have been vocal about the dangers of ecosystem consolidation. When tools are owned by a single entity that prioritizes enterprise focus over community needs, specialized tools like CDKTF are often the first to go.

This deprecation highlights a critical flaw in the all-in-one vendor approach. If you are using Terraform Cloud or HashiCorp’s ecosystem exclusively, your options just shrank. You are now being forced down a path (HCL) that might not fit your team's workflow.

This is why we built env zero to be framework-agnostic. We believe the platform should fit the tool, not the other way around.

Your Move: Two Paths Forward

So, where do you go from here? If you are an env zero customer, you’re already in a good spot because our platform doesn’t care which underlying engine you use. You have two distinct migration paths, and we support both as first-class citizens.

Path 1: The "Code is King" Approach (Switch to Pulumi)

If you chose CDKTF because you prefer TypeScript, Python, or Go over HCL, moving to standard Terraform/OpenTofu is going to feel like a regression. You don't want to lose loops, real variables, and abstraction capabilities.

The Solution: Pulumi.

Pulumi is the mature, battle-tested alternative for infrastructure-as-software. Unlike CDKTF, which was always a translation layer sitting on top of Terraform, Pulumi is native.

• env zero Support: We treat Pulumi exactly like Terraform. You get the same PR plans, cost estimation, policy checks (OPA), and RBAC controls. You can swap the engine without swapping the management platform.

Path 2: The "Standardization" Approach (Switch to OpenTofu)

If you are ready to stop fighting the current and just want the most stable, widely supported standard, it’s time to embrace HCL. But you don't have to do it on HashiCorp’s terms.

The Solution: OpenTofu.

OpenTofu is the community-driven, truly open-source successor to Terraform. Since it’s governed by the Linux Foundation, it isn’t subject to the whims of a single corporate board.

• env zero Support: We are proud founding members of OpenTofu. HashiCorp suggests running cdktf synth --hcl to eject to raw HCL. You can take that generated HCL and run it immediately in env zero using OpenTofu, ensuring your core infrastructure remains on a truly open license.

In Summary

The sunset of CDKTF is a painful reminder that tools come and go, but your management platform needs to endure.

If you are using a rigid platform that only supports the "official" way of doing things, you are vulnerable. Today it's CDKTF; tomorrow it could be another module or provider you rely on.

At env zero, our mission is to decouple your control plane from the underlying code. Whether you migrate your CDKTF stacks to Pulumi for better programming capabilities or OpenTofu for open-source stability, env zero is the bridge that keeps your team shipping without interruption.

Don't let a deprecation notice stop your deployment. Schedule a demo with our architects to discuss your CDKTF migration strategy today.

FAQ's

What Happened with the Deprecation of CDKTF?

HashiCorp recently announced the deprecation of the Cloud Development Kit for Terraform (CDKTF), stating that the tool did not find "product-market fit at scale." Effective immediately, no further updates, features, or fixes will be shipped, and the repository is now archived. For teams that relied on CDKTF to use languages like TypeScript, Python, or Go for infrastructure, this means they must either revert to HCL (HashiCorp Configuration Language) or migrate to other solutions like AWS CDK.

Why Is CDKTF's Deprecation a Problem for My Team?

If your team adopted CDKTF to avoid writing raw HCL and to use more flexible programming languages, the deprecation forces a regression. Teams are now faced with returning to HCL, which may not align with their workflows, or rewriting infrastructure using other cloud-native solutions, which could lock them into a specific cloud provider. This shift highlights the risks of relying on a single vendor ecosystem for infrastructure management.

How Can ENV Zero Help with the CDKTF Deprecation?

ENV Zero is designed to be framework-agnostic, meaning it supports multiple infrastructure engines, allowing you to easily migrate without being tied to a single vendor or tool. Whether your team chooses Pulumi for a programming-based approach or OpenTofu for a stable, open-source Terraform alternative, ENV Zero will seamlessly support both, ensuring your deployment pipeline remains uninterrupted and flexible.

What Are the Two Migration Paths for Teams Affected by CDKTF's Deprecation?

There are two main migration paths for teams impacted by CDKTF’s deprecation:

• Path 1: "Code is King" Approach: If your team prefers using languages like TypeScript, Python, or Go, Pulumi is an ideal alternative. Pulumi is a mature, programming-driven IaC solution that offers native support and can easily integrate into your existing environment.
  ‍
• Path 2: "Standardization" Approach: If you prefer sticking to HCL for stability and wide support, OpenTofu is the open-source alternative to Terraform that decouples your infrastructure from proprietary vendor lock-in. It’s governed by the Linux Foundation, ensuring long-term stability and community-driven growth.

What Is OpenTofu and How Does It Differ from Terraform?

OpenTofu is an open-source, community-driven alternative to Terraform, created as a response to concerns over vendor lock-in. Unlike Terraform, which is governed by HashiCorp, OpenTofu is under the Linux Foundation, meaning it’s not subject to the whims of a single corporate entity. It’s a fully open-source solution for managing infrastructure as code (IaC), offering the same functionality as Terraform without the corporate restrictions or pricing.

Can ENV Zero Support Both Pulumi and OpenTofu?

Yes! ENV Zero supports both Pulumi and OpenTofu as first-class citizens. Whether your team prefers Pulumi for using traditional programming languages or OpenTofu for the stability and openness of HCL, ENV Zero integrates seamlessly with both, allowing you to switch engines without changing the management platform. This flexibility ensures your teams aren’t locked into one approach, providing a long-term, scalable solution that adapts to your needs.