This will make the service more discoverable and will also allow the Drive to create, share and manage Google's custom My Maps.

Also, the users can import data from their Drive documents, such as addresses from a spreadsheet or form to pinpoint them on the map.

This change should make it a little easier to manage all custom mapping of the users, as these will now be accessible from the same place where they find their documents and spreadsheets.

In addition, it makes it easier to share custom maps with others, as the user can simply drop the map into a shared Drive folder.