Quick answer: A data bucket is a shared piece of state that multiple Mockoon routes can read and update, which lets you model a create-then-read flow without a real backend. It is a convenient way to build stateful behavior in a GUI tool, but the state lives in a client-specific configuration. ...
Source: [Dev.to](https://dev.to/jeff_pdc/mockoon-data-buckets-shared-state-across-routes-vs-spec-based-state-42hk)