diff --git a/cloud/ansible/README.md b/cloud/ansible/README.md
index b8666a76..e52da17e 100644
--- a/cloud/ansible/README.md
+++ b/cloud/ansible/README.md
@@ -18,7 +18,7 @@ This example showcases the deployment on our own OpenStack based Public Cloud Of
   - [Import Key Pair](#key-pair)
 - [Clone Git Repository](#clone-git)
 - [Settings and recommended values](#settings)
-  - [OpenStack authentication variables](#os-auth)
+  - [Clouds.yaml](#clouds-yaml)
   - [Ansible remote user](#remote-user)
   - [Instance settings](#instance-settings)
   - [User password](#user-password)
@@ -97,25 +97,27 @@ Import your SSH public key.
 # Clone Git Repository
 Clone the `tpotce` repository to your Ansible Master:  
 `git clone https://github.com/dtag-dev-sec/tpotce.git`  
-All Ansible related files are located in the [`cloud/ansible/openstack`](../../cloud/ansible/openstack) folder.
+All Ansible related files are located in the [`cloud/ansible/openstack`](openstack) folder.
 
 <a name="settings"></a>
 # Settings and recommended values
-You can configure all aspects of your Elastic Cloud Server and T-Pot before using the Playbook.  
-The settings are located in the following Ansible vars files:
+You can configure all aspects of your Elastic Cloud Server and T-Pot before using the Playbook:
 
-<a name="os-auth"></a>
-## OpenStack authentication variables
-Located at [`openstack/roles/deploy/vars/os_auth.yaml`](openstack/roles/deploy/vars/os_auth.yaml).  
+<a name="clouds-yaml"></a>
+## Clouds.yaml
+Located at [`openstack/clouds.yaml`](openstack/clouds.yaml).  
 Enter your Open Telekom Cloud API user credentials here (username, password, project name, user domain name):  
 ```
-auth_url: https://iam.eu-de.otc.t-systems.com/v3
-username: your_api_user
-password: your_password
-project_name: eu-de_your_project
-os_user_domain_name: OTC-EU-DE-000000000010000XXXXX
+clouds:
+  open-telekom-cloud:
+    profile: otc
+    auth:
+      project_name: eu-de_your_project
+      username: your_api_user
+      password: your_password
+      user_domain_name: OTC-EU-DE-000000000010000XXXXX
 ```
-You can also perform different authentication methods like sourcing your `.ostackrc` file or using the OpenStack `clouds.yaml` file.  
+You can also perform different authentication methods like sourcing OpenStack OS_* environment variables or providing an inline dictionary.  
 For more information have a look in the [os_server](https://docs.ansible.com/ansible/latest/modules/os_server_module.html) Ansible module documentation.
 
 <a name="remote-user"></a>
@@ -126,17 +128,15 @@ You may have to adjust the `remote_user` in the Ansible Playbook under [`opensta
 ## Instance settings
 Located at [`openstack/roles/deploy/vars/main.yaml`](openstack/roles/deploy/vars/main.yaml).  
 Here you can customize your virtual machine specifications:
-  - Specify the region name
   - Choose an availability zone. For Open Telekom Cloud reference see [here](https://docs.otc.t-systems.com/en-us/endpoint/index.html).
   - Change the OS image (For T-Pot we need Debian)
   - (Optional) Change the volume size
   - Specify your key pair (:warning: Mandatory)
   - (Optional) Change the instance type (flavor)  
     `s2.medium.8` corresponds to 1 vCPU and 8GB of RAM and is the minimum required flavor.  
-    A full list of Open telekom Cloud flavors can be found [here](https://docs.otc.t-systems.com/en-us/usermanual/ecs/en-us_topic_0035470096.html).
+    A full list of Open Telekom Cloud flavors can be found [here](https://docs.otc.t-systems.com/en-us/usermanual/ecs/en-us_topic_0177512565.html).
 
 ```
-region_name: eu-de
 availability_zone: eu-de-03
 image: Standard_Debian_10_latest
 volume_size: 128
@@ -154,7 +154,7 @@ user_password: LiNuXuSeRPaSs#
 
 <a name="tpot-conf"></a>
 ## Configure `tpot.conf.dist`
-The file is located in [`iso/installer/tpot.conf.dist`](../../iso/installer/tpot.conf.dist).  
+The file is located in [`iso/installer/tpot.conf.dist`](/iso/installer/tpot.conf.dist).  
 Here you can choose:
   - between the various T-Pot editions
   - a username for the web interface
diff --git a/cloud/ansible/openstack/clouds.yaml b/cloud/ansible/openstack/clouds.yaml
new file mode 100644
index 00000000..fd0b2831
--- /dev/null
+++ b/cloud/ansible/openstack/clouds.yaml
@@ -0,0 +1,8 @@
+clouds:
+  open-telekom-cloud:
+    profile: otc
+    auth:
+      project_name: eu-de_your_project
+      username: your_api_user
+      password: your_password
+      user_domain_name: OTC-EU-DE-000000000010000XXXXX
diff --git a/cloud/ansible/openstack/roles/custom_ews/tasks/main.yaml b/cloud/ansible/openstack/roles/custom_ews/tasks/main.yaml
index a484f34e..1856a3df 100644
--- a/cloud/ansible/openstack/roles/custom_ews/tasks/main.yaml
+++ b/cloud/ansible/openstack/roles/custom_ews/tasks/main.yaml
@@ -1,6 +1,6 @@
 - name: Copy ews configuration file
   template:
-    src: ../templates/ews.cfg
+    src: ews.cfg
     dest: /data/ews/conf
     owner: root
     group: root
diff --git a/cloud/ansible/openstack/roles/custom_hpfeeds/tasks/main.yaml b/cloud/ansible/openstack/roles/custom_hpfeeds/tasks/main.yaml
index 4c5a2c0e..50ea7311 100644
--- a/cloud/ansible/openstack/roles/custom_hpfeeds/tasks/main.yaml
+++ b/cloud/ansible/openstack/roles/custom_hpfeeds/tasks/main.yaml
@@ -1,6 +1,6 @@
 - name: Copy hpfeeds configuration file
   copy:
-    src: ../files/hpfeeds.cfg
+    src: hpfeeds.cfg
     dest: /data/ews/conf
     owner: tpot
     group: tpot
diff --git a/cloud/ansible/openstack/roles/deploy/tasks/main.yaml b/cloud/ansible/openstack/roles/deploy/tasks/main.yaml
index 7e7826b8..bd68b1bf 100644
--- a/cloud/ansible/openstack/roles/deploy/tasks/main.yaml
+++ b/cloud/ansible/openstack/roles/deploy/tasks/main.yaml
@@ -2,51 +2,26 @@
   shell: echo t-pot-ansible-$(pwgen -ns 6 -1)
   register: tpot_name
 
-- name: Import OpenStack authentication variables
-  include_vars:
-    file: roles/deploy/vars/os_auth.yaml
-  no_log: true
-
 - name: Create security group
   os_security_group:
-    auth:
-      auth_url: "{{ auth_url }}"
-      username: "{{ username }}"
-      password: "{{ password }}"
-      project_name: "{{ project_name }}"
-      os_user_domain_name: "{{ os_user_domain_name }}"
+    cloud: open-telekom-cloud
     name: sg-tpot-any
     description: tpot any-any
 
 - name: Add rules to security group
   os_security_group_rule:
-    auth:
-      auth_url: "{{ auth_url }}"
-      username: "{{ username }}"
-      password: "{{ password }}"
-      project_name: "{{ project_name }}"
-      os_user_domain_name: "{{ os_user_domain_name }}"
+    cloud: open-telekom-cloud
     security_group: sg-tpot-any
     remote_ip_prefix: 0.0.0.0/0
 
 - name: Create network
   os_network:
-    auth:
-      auth_url: "{{ auth_url }}"
-      username: "{{ username }}"
-      password: "{{ password }}"
-      project_name: "{{ project_name }}"
-      os_user_domain_name: "{{ os_user_domain_name }}"
+    cloud: open-telekom-cloud
     name: network-tpot
 
 - name: Create subnet
   os_subnet:
-    auth:
-      auth_url: "{{ auth_url }}"
-      username: "{{ username }}"
-      password: "{{ password }}"
-      project_name: "{{ project_name }}"
-      os_user_domain_name: "{{ os_user_domain_name }}"
+    cloud: open-telekom-cloud
     network_name: network-tpot
     name: subnet-tpot
     cidr: 192.168.0.0/24
@@ -56,26 +31,15 @@
 
 - name: Create router
   os_router:
-    auth:
-      auth_url: "{{ auth_url }}"
-      username: "{{ username }}"
-      password: "{{ password }}"
-      project_name: "{{ project_name }}"
-      os_user_domain_name: "{{ os_user_domain_name }}"
+    cloud: open-telekom-cloud
     name: router-tpot
     interfaces:
       - subnet-tpot
 
 - name: Launch an instance
   os_server:
-    auth:
-      auth_url: "{{ auth_url }}"
-      username: "{{ username }}"
-      password: "{{ password }}"
-      project_name: "{{ project_name }}"
-      os_user_domain_name: "{{ os_user_domain_name }}"
+    cloud: open-telekom-cloud
     name: "{{ tpot_name.stdout }}"
-    region_name: "{{ region_name }}"
     availability_zone: "{{ availability_zone }}"
     image: "{{ image }}"
     boot_from_volume: yes
diff --git a/cloud/ansible/openstack/roles/deploy/vars/main.yaml b/cloud/ansible/openstack/roles/deploy/vars/main.yaml
index 0854d0ed..d2b0664a 100644
--- a/cloud/ansible/openstack/roles/deploy/vars/main.yaml
+++ b/cloud/ansible/openstack/roles/deploy/vars/main.yaml
@@ -1,4 +1,3 @@
-region_name: eu-de
 availability_zone: eu-de-03
 image: Standard_Debian_10_latest
 volume_size: 128
diff --git a/cloud/ansible/openstack/roles/deploy/vars/os_auth.yaml b/cloud/ansible/openstack/roles/deploy/vars/os_auth.yaml
deleted file mode 100644
index fdb1a29b..00000000
--- a/cloud/ansible/openstack/roles/deploy/vars/os_auth.yaml
+++ /dev/null
@@ -1,5 +0,0 @@
-auth_url: https://iam.eu-de.otc.t-systems.com/v3
-username: your_api_user
-password: your_password
-project_name: eu-de_your_project
-os_user_domain_name: OTC-EU-DE-000000000010000XXXXX
diff --git a/cloud/ansible/openstack/roles/install/tasks/main.yaml b/cloud/ansible/openstack/roles/install/tasks/main.yaml
index b931cc77..40977347 100644
--- a/cloud/ansible/openstack/roles/install/tasks/main.yaml
+++ b/cloud/ansible/openstack/roles/install/tasks/main.yaml
@@ -9,7 +9,7 @@
     repo: "https://github.com/dtag-dev-sec/tpotce.git"
     dest: /root/tpot
 
-- name: Prepare to set user password 
+- name: Prepare to set user password
   set_fact:
     user_name: "{{ ansible_user }}"
     user_salt: "s0mew1ck3dTpoT"