Provided is a cloud-based document link system and a method that uses a processor to provide a method for providing a service configured to paste a document stored on a cross-clipboard. The cloud-based document link system includes a storage unit configured to store, on a cross-clipboard, at least one first document associated with a first service provided through a first device, an identification unit configured to identify at least one second service linkable with each first document based on whether the at least one second service is configured to paste the at least one first document stored on the cross-clipboard, and a providing unit configured to provide a list of each second service if the cross-clipboard is accessed through a second device.