Some maps need to have an element of interactivity for the user to zoom in and out to see the data clearly. This is particularly true for maps showing small geographical areas, like local authorities or Middle-layer Super Output Areas (MSOAs).
Maps do not need to include the ability to zoom if the geographical areas shown are large enough to be presented clearly on a static map, for example, a map of the UK showing the devolved nations and English regions.
Other interactive features
As with other charts, maps can also be made interactive allowing the user to select and change the data and categories shown. If you are creating this kind of interactive map, follow the general guidance on interactive charts.