Web Map Service is an official specification from the Open Geospatial Consortium (OGC). An OGC WMS delivers a ‘portrayal’, or a picture screenshot, of geographic information presented as a static map, rendered into picture formats such as PNG and GIF and useful for display and view purposes. WMS focuses on rendering customized maps and is an ideal solution for dynamic data or custom-styled maps.
Credit : Hexagon Geospatial