Abstract: A method and program for providing a collaboration service is provided. The method includes generating, by a service server, a project corresponding to a collaboration group, receiving, by the service server, card data from a user client in a main board in the project and generating, by the service server, a default card, the card data being information input to the project, receiving, by the service server, a request to input a label to the card data, connecting, by the service server, the card data to an expansion board corresponding to the label, and displaying, by the service server, card data connected by a specific label on the expansion board.