Google Maps has a wide array of APIs that let you embed the functionality of Google Maps.
https://developers.google.com/maps/
Mapping
Get access to data on 17,992,099 websites that are Google Maps API Customers. We know of 3,933,334 live websites using Google Maps API and an additional 14,058,765 sites that used Google Maps API historically and 1,721,951 websites in the United States.
Google Maps API websites that are also using other technologies.
Get a list of 17,992,099 websites using Google Maps API which includes location information, hosting data, contact details, 3,933,334 currently live websites and an additional 3,741,916 domains that redirect to sites in this list. 14,058,765 sites that used this technology previouslyand 1,721,951 websites in the United States currently using Google Maps API.
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