An interactive map is based on a Web technology where each dot or polygon of the map is linked to an action or internal/external link. When we click in these dots, an action is triggered, which can either be added information to the selected area, with a new screen or text box, or just executing a zoom, or linking the dot with social networks...
An Interactive map could be created from a single picture, map, diagram, etc. So information from a specific area can be highlighted on a picture like the parts of a body, or just highlight geolocalized information in a map. Since the beginning of HTML5, we can create Interactive maps without using Flash.