StealthCloud is a delicious mixture of Ansible roles that provide the user with an automatic spin-up of a Nextcloud instance hosted on a stealth Onion service.
StealthCloud utilizes much of the infrastructure provided by AnarchoTechNYC's ansible-role-tor, and you can find a lot of great further explanations of Onion services and specifics there. Whatever differs from those roles will be included in the documentation here.