Modern web development often treats URLs as the sole source of truth, but enterprise users expect their environment to remember them.
Persistent Preferences
If a user collapses a sidebar, it should remain collapsed tomorrow. If they adjust a column width in a Data Grid, that width must persist. Failing to save these micro-interactions frustrates power users.
Draft States
In complex forms, users get interrupted. Drafts must auto-save locally and remotely. Losing 30 minutes of data entry because a session expired is unacceptable in back-office environments.
Related: Error Handling.