Provided are a display apparatus and an operating method of the display apparatus. The display apparatus includes: a communication interface; a display; a memory storing at least one instruction; and at least one processor configured to execute the at least one instruction to: receive, through the communication interface, from a server apparatus, a first execution result content obtained by executing a contents application based on an input signal from an external device connected to the server apparatus and configured to provide the input signal to the server apparatus, control the display to display the first execution result content, receive, through the communication interface, from the server apparatus, a first input signal indicating a specified value, the first input signal being transmitted from the controller to the server apparatus, based on the first input signal indicating the specified value, display, through the display, a user interface screen to control the display apparatus, receive, through the communication interface while the display is displaying the user interface screen, a second input signal from the external device, control the displayed user interface screen, based on the second input signal, and perform an operation based on the control of the displayed user interface screen.