An in-vehicle infotainment device includes a first processor for executing a web application, and a second processor for outputting vehicle data to the first processor. The first processor includes a first-processor-side inter-node communication (INC) interface module for transmitting and receiving information to and from the second processor, the second processor includes a second-processor-side INC interface module for transmitting and receiving information to and from the first processor, and the first processor provides the vehicle data received from the second processor to the web application if a request for vehicle data is received from the web application.