Embodiments of the present application provide a
data transmission method, device, equipment, storage medium and program product. The method comprises: in response to a data sending request, converting, by a data converter, a
data format of to-be-processed data into a target format corresponding to a target external
system; if it is determined that
authentication and
authorization to the target external
system are passed, sending, by a
data transmission channel, the to-be-processed data in the target format to the target external
system according to a
data transmission mode of the target external system and an address of the target external system; in response to a data receiving request, if it is determined that the external system is in a white
list, receiving the to-be-processed data; converting, by the data converter, a
data format of the to-be-processed data into a target format corresponding to a target internal subsystem; and sending, according to interface basic information, the to-be-processed data in the target format to the target internal subsystem. The method is used to improve the efficiency of data transmission between a business system and an external system.