Simply put an encounter map, is encounter scale map, which for Dungeons & Dragons, Pathfinder, Starfinder and many d20 based games is 1 inch = 5 ft scale. I often place 1 inch square grids on my maps, as maps are generally for printing use. However, if I'm creating encounter scale maps for virtual tabletop applications, I keep the scale and export to appropriate PPI resolution (70 and 100 ppi), but do not include a grid. Some games use Hex grid, some games use a different scale in milimeters and other specific dimensions. All other, non-encounter scale maps have other scales and are generally used for information or illustration and not for use as a game map. This includes village, town, city, regional, continent, world maps and anything beyond that.