An electronic apparatus comprising: a display; a communicator; at least one memory configured to store at least one instruction; and at least one processor configured to execute the at least one instruction, wherein the at least one processor is configured to: control the display to display a first screen corresponding to a first application, the first screen including a first layer configured to receive and display writing on the first layer according to a touch interaction from a user, and control the display to display a second screen corresponding to a second application different from the first application, the second screen including: a second layer on the first layer and configured to display content on the first screen, and a third layer on the second layer and configured to receive and display writing on the third layer according to the touch interaction from the user while displaying the content of the second layer under the displayed writing on the third layer, wherein the second screen is displayed on a partial area of the first screen, wherein, based on the touch interaction of the user for inputting the writing starting in one of the first screen and the second screen and being continuously input through the other one of the first screen and the second screen, the writing is seamlessly displayed on the first screen and the second screen, wherein, based on a user command for moving a first position of the second screen to a second position being received, the second layer and the third layer included in the second screen are moved to the second position, wherein, the second screen corresponds to a screen currently displayed on a display of an external device connected to the electronic device, and wherein image data corresponding to the second screen is received from the external device through the communicator. a display; a communicator; at least one memory configured to store at least one instruction; and at least one processor configured to execute the at least one instruction, wherein the at least one processor is configured to: control the display to display a first screen corresponding to a first application, the first screen including a first layer configured to receive and display writing on the first layer according to a touch interaction from a user, and control the display to display a second screen corresponding to a second application different from the first application, the second screen including: control the display to display a first screen corresponding to a first application, the first screen including a first layer configured to receive and display writing on the first layer according to a touch interaction from a user, and control the display to display a second screen corresponding to a second application different from the first application, the second screen including: a second layer on the first layer and configured to display content on the first screen, and a third layer on the second layer and configured to receive and display writing on the third layer according to the touch interaction from the user while displaying the content of the second layer under the displayed writing on the third layer, wherein the second screen is displayed on a partial area of the first screen, wherein, based on the touch interaction of the user for inputting the writing starting in one of the first screen and the second screen and being continuously input through the other one of the first screen and the second screen, the writing is seamlessly displayed on the first screen and the second screen, wherein, based on a user command for moving a first position of the second screen to a second position being received, the second layer and the third layer included in the second screen are moved to the second position, wherein, the second screen corresponds to a screen currently displayed on a display of an external device connected to the electronic device, and wherein image data corresponding to the second screen is received from the external device through the communicator.