Technology is disclosed herein for resolving synchronization conflicts. According to at least one embodiment, multiple computing devices in a synchronization group can communicate with a cloud storage service for data synchronization. The cloud storage service determines a ranking list for the synchronization group based on a user input indicating the priority of a new computing device in a ranking list. When two conflicting updates to a data set are received from two computing devices, the cloud storage service determines a winning update from the two conflicting updates based on priorities of the first and second computing devices in a ranking list, and distributes the winning update to the computing devices to override the other conflicting update.