User of this component needs to create a Google maps api key - this means, the Google Maps JavaScript API.  But, this API alone, as part of the key will not allow for the rendering of the address, or geo code on the map correctly.  User will also need to include the Geocoding and GeoLocation APIs for proper rendering of addresses and coordinates on the map. 

You may also need to add more, tailored to what you are attempting to perform using the Maps.  Please see below for a more detailed list.