Ability to lock records in CRM so that they can no longer be edited or deleted. When a record has reached the end of its lifecycle, nobody should be allowed to modify the record any longer. 

For example: Once an opportunity record is closed (closed won or closed lost), it just needs to live in the system without being touched. Same can be for “Cases” or records sitting in other custom modules. Or maybe once a record has been interfaced to a backend system, you would want to lock the record so that it can no longer be modified in ZohoCRM.

While this could be done using page layouts (may be) the trouble is the way Layouts are setup/presented to users on record creation makes it not really usable. 

We could create a field holding values say “Open” & “Locked” and change the record type of the record using workflow field update or trigger. And then create a separate page layout for the “Locked” record type with all fields marked as ‘Read-Only’. But we can't remove the ‘Edit’ and ‘Delete’ buttons from the page layout. However, even if we live with that limitation, this is not an option if we are using record types for some other purpose and do not want to change it just to meet this requirement.

A workflow "action" would be ideal in this case, something like a worklflow action called ‘Lock/Unlock Record’.