The plain-English version
Storage mounted into a container with a lifecycle distinct from its writable container layer.
Why it matters
It provides an explicit place for data that should survive replacement of an instance.
Let’s make it click
A development database stores its files in a named volume.
Vibe Bro’s heads-up
A volume is not automatically backed up, shared appropriately, or compatible with concurrent writers; define those requirements separately.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: Volumes have a lifecycle distinct from the container writable layer and require separate backup/concurrency decisions.