Just built a Terraform module for our ZTNA fabric - sharing.

Hey everyone, been deep in the weeds on our Zero Trust rollout and hit a common pain point: replicating our ZTNA fabric configuration across environments. It was all manual API calls and JSON blobs—super error-prone.

So, I channeled that frustration and built a reusable Terraform module to manage our core ZTNA resources. It's vendor-agnostic in design, but we're implementing it with Cloudflare Zero Trust. The module handles:

* **Gateway Policies:** Defining identity-aware access rules (user groups, device posture, etc.).
* **Application Definitions:** For SaaS and internal apps, with automatic DNS record creation.
* **Segment Tunnel Configuration:** Setting up the secure tunnels to our private subnets.

The beauty is that it ties our ZTNA config directly to our existing Terraform state for networks and groups. Change a security group in AWS? The ZTNA access rules can reflect that automatically.

For example, the core resource for an application might look like this in the module call:
```hcl
module "ztna_sales_app" {
source = "./modules/ztna-core"
app_name = "sales-crm-internal"
internal_domain = "crm.internal.company.com"
allowed_idp_groups = [data.azuread_group.sales_team.id]
required_device_posture = ["os_version_check", "disk_encryption"]
tunnel_id = module.ztna_tunnel.primary_tunnel_id
}
```

Biggest win? Consistency and auditability. We can now see exactly what changed in a pull request and roll back cleanly if needed. It also makes onboarding new dev/QA environments a breeze.

Would love to hear if others have gone down this path. What resources did you prioritize automating? Any tricky parts with managing device posture checks as code?

— Aiden