Blue allows you to use Google Maps for the map view instead of the default OpenStreetMap. Google maps often has more detailed maps of certain areas and more accurate location data. However, this requires a Google Maps API key and has to be entered in the company settings by the company owner.
When you switch to Google maps, this effects all map views in Blue including the company map, the map view in projects, and the location custom field.
To use Google Maps in Blue, the following APIs are required to be turned on in Google Cloud Console:
You will need to sign up for a Google Cloud account and create a project to get the API keys following the instructions here.