diff --git a/ansible-kvm-vms/README.md b/ansible-kvm-vms/README.md
index 0bbdfef..a4798c4 100644
--- a/ansible-kvm-vms/README.md
+++ b/ansible-kvm-vms/README.md
@@ -5,7 +5,7 @@ This project provides an Ansible-based framework to automatically provision virt
 ## 🚀 Features
 
 - **Automated Host Setup**: Installs and configures `libvirt`, `qemu-kvm`, and `libguestfs-tools`.
-- **Cloud-init Support**: Generates and injects Cloud-init user-data for all supported OSs via a NoCloud ISO.
+- **Ignition Support**: Generates and injects Ignition configuration for all supported OSs via the `fw_cfg` QEMU feature.
 - **Custom User Provisioning**: Automatically creates a default user with a hashed password and injects your SSH public key.
 - **Modular Design**: Uses Ansible roles for host preparation, configuration generation, and VM provisioning.
 
@@ -20,7 +20,7 @@ ansible-kvm-vms/
 │   └── vms.yml              # List of VMs to create with CPU, RAM, and Disk specs
 ├── roles/
 │   ├── kvm_host_setup/      # Installs virtualization dependencies on the host
-│   ├── os_config/           # Generates Ignition/Cloud-init config files
+│   ├── os_config/           # Generates Ignition configuration files
 │   └── vm_provision/        # Downloads images and creates VMs via virt-install
 └── playbooks/
     └── create_vms.yml       # Main orchestration playbook
@@ -65,8 +65,8 @@ Edit `vars/vms.yml` to add or modify the VMs you wish to deploy. You can specify
 ## 🔍 How it Works
 
 Since immutable OSs do not use traditional installers, this setup uses a "seed" approach:
-1. **Config Generation**: The `os_config` role creates a YAML Cloud-init user-data file based on your variables.
-2. **Deployment**: `virt-install` is used to create the VM with UEFI boot. The `--cloud-init` flag is used to attach the configuration as a NoCloud ISO, which the immutable OSs (CoreOS, Flatcar, MicroOS) process at first boot.
+1. **Config Generation**: The `os_config` role creates a JSON Ignition configuration file based on your variables.
+2. **Deployment**: `virt-install` is used to create the VM with UEFI boot. The `--sysinfo` flag is used to provide the Ignition config via the `fw_cfg` device, which the immutable OSs (CoreOS, Flatcar, MicroOS) process at first boot.
 
 ## 🌐 Accessing your VMs
 
diff --git a/ansible-kvm-vms/roles/os_config/tasks/main.yml b/ansible-kvm-vms/roles/os_config/tasks/main.yml
index 5293e37..f92925f 100644
--- a/ansible-kvm-vms/roles/os_config/tasks/main.yml
+++ b/ansible-kvm-vms/roles/os_config/tasks/main.yml
@@ -1,6 +1,6 @@
 ---
-- name: Generate Cloud-init config
+- name: Generate Ignition config
   template:
-    src: user-data.yaml.j2
-    dest: "/tmp/{{ vm_name }}_user-data"
+    src: ignition.json.j2
+    dest: "/tmp/{{ vm_name }}.ign"
 
diff --git a/ansible-kvm-vms/roles/os_config/templates/ignition.json.j2 b/ansible-kvm-vms/roles/os_config/templates/ignition.json.j2
new file mode 100644
index 0000000..acad839
--- /dev/null
+++ b/ansible-kvm-vms/roles/os_config/templates/ignition.json.j2
@@ -0,0 +1,15 @@
+{
+  "ignition": {
+    "version": "3.3.0"
+  },
+  "passwd": {
+    "users": [
+      {
+        "name": "{{ vm_user }}",
+        "sshAuthorizedKeys": [
+          "{{ lookup('file', vm_ssh_public_key | replace('~', lookup('env', 'HOME'))) }}"
+        ]
+      }
+    ]
+  }
+}
diff --git a/ansible-kvm-vms/roles/vm_provision/tasks/main.yml b/ansible-kvm-vms/roles/vm_provision/tasks/main.yml
index 21a45fd..bade724 100644
--- a/ansible-kvm-vms/roles/vm_provision/tasks/main.yml
+++ b/ansible-kvm-vms/roles/vm_provision/tasks/main.yml
@@ -54,7 +54,7 @@
     --graphics none \
     --noautoconsole \
     --boot uefi \
-    --cloud-init user-data=/tmp/{{ vm_name }}_user-data
+    --sysinfo type=fwcfg,entry0.name="opt/com.coreos/config",entry0.file="/tmp/{{ vm_name }}.ign"
   args:
     creates: "/etc/libvirt/qemu/{{ vm_name }}.xml"
   become: yes