gitlab-foss/doc/development/shared_files.md

stage, group, info

stage	group	info
none	unassigned	Any user with at least the Maintainer role can merge updates to this content. For details, see https://docs.gitlab.com/ee/development/development_processes.html#development-guidelines-review.

Shared files

Historically, GitLab supported storing files that could be accessed from multiple application servers in shared/, using a shared storage solution like NFS. Although this is still an option for some GitLab installations, it must not be the only file storage option for a given feature. This is because cloud-native GitLab installations do not support it.

Our uploads documentation describes how to handle file storage in such a way that it supports both options: direct disk access and object storage.