@Khanna Ji
Configurable workspaces are much matured now and many customers have already moved towards it and asking their agents to use that.
Service Operations Workspace (SOW) comes OOTB in instance and adds lot of extra features for Agents and makes their life easier.
You can discuss with your customer and add Workspace lists etc if they want but otherwise it has almost everything for agents to work on INC, PRB, CHG
these links should help you
Basic Overview on Migrating to a Configurable Workspace
FAQ for Service Operations Workspace
If my response helped please mark it correct and close the thread so that it benefits future readers.
Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader