consul/website/content/docs/nia/compatibility.mdx

---
layout: docs
page_title: Consul-Terraform-Sync (CTS) Compatibility
description: >-
  Consul-Terraform-Sync (CTS) Compatibility
---

# Compatibility

This topic describes Consul-Terraform-Sync (CTS) cross-compatibility with Consul, Terraform, and Vault.

## Consul

Below are CTS versions with supported Consul versions. The latest CTS binary supports the three most recent Consul minor versions, along with their latest patch versions.

| CTS Version            | Consul OSS & Enterprise Version | HCP Consul Version |
| :--------------------- | :------------------------------ | :----------------- |
| CTS Enterprise 0.6+    | 1.8+                            | 1.9+               |
| CTS Enterprise 0.3-0.5 | 1.8+                            | N/A                |
| CTS OSS 0.6+           | 1.8+                            | 1.9+               |
| CTS OSS 0.1-0.5        | 1.8+                            | N/A                |

## Terraform

CTS integration with Terraform is supported for the following:

| CTS Version         | Terraform CLI Version | Terraform Cloud Version | Terraform Enterprise Version |
| :------------------ | :-------------------- | :---------------------- | :--------------------------- |
| CTS Enterprise 0.7   | 0.13-1.2             | Latest                  | v202010-2 - Latest           |
| CTS Enterprise 0.4+ | 0.13 - 1.1            | Latest                  | v202010-2 - Latest           |
| CTS Enterprise 0.3  | 0.13 - 1.1            | N/A                     | v202010-2 - Latest           |
| CTS OSS 0.7         | 0.13 - 1.2            | N/A                     | N/A                          |
| CTS OSS 0.3+        | 0.13 - 1.1            | N/A                     | N/A                          |
| CTS OSS 0.2         | 0.13 - 1.0            | N/A                     | N/A                          |
| CTS OSS 0.1         | 0.13 - 0.14           | N/A                     | N/A                          |

## Vault

CTS integrates with Vault to query secrets, the integration is supported for the following:

| CTS Version         | Vault OSS & Enterprise Version |
| :------------------ | :----------------------------- |
| CTS Enterprise 0.3+ | 0.7+                           |
| CTS OSS 0.1+        | 0.7+                           |