Virtualization server providing virtualization service of web application and method for transmitting data for providing the same

Disclosed are a virtualization server providing web application virtualization service by transmitting data to a client terminal, and a method for transmitting the data for providing the web application virtualization service. More specifically, the virtualization server for providing web application virtualization service includes a web engine which divides each macro block included in a frame into an update area or a non-updated region by a process of rendering the web application containing a plurality of frames, and generates an encoding map on the basis of the rendering data containing the data of the macro block divided into update region; and an encoder generating coded data by performing encoding via the encoding map.