[ansible@ansible ~]$ ansible-galaxy collection install microsoft.ad
Starting galaxy collection install process
Process install dependency map
Starting collection install process
Downloading https://galaxy.ansible.com/api/v3/plugin/ansible/content/published/collections/artifacts/microsoft-ad-1.11.0.tar.gz to /home/ansible/.ansible/tmp/ansible-local-67186v5wyun37/tmpplulm2oa/microsoft-ad-1.11.0-p_fjaa6z
Installing 'microsoft.ad:1.11.0' to '/home/ansible/.ansible/collections/ansible_collections/microsoft/ad'
microsoft.ad:1.11.0 was installed successfully

[ansible@ansible ~]$ ansible-galaxy collection list

# /home/ansible/.ansible/collections/ansible_collections
Collection        Version
----------------- -------
ansible.windows   3.5.0  
community.windows 3.2.0  
microsoft.ad      1.11.0