The All assets view includes all assets in your Atlan data estate.
If your Atlan admin has turned off View "All assets" in Assets Discovery from Labs in the admin center, you may be unable to see this view. In that case, you'll only be able to view the assets curated for the persona(s) or purpose(s) you belong to in Atlan. Admin users will still have full access to all assets, even when this default behavior is turned off.