Google Distance Matrix API

This is a project to create a basic javascript or similar application using the Google Distance Matrix API. The aim? To be able to input UK/England Postcodes or Geocode Longitude/Latitude coordinates into the app/webpage or similar and calculate the distance to all these elements from one single address. The aim is to be able to help make decisions about where in a town is the most effective location to be able to reach as many addresses (geocodes) in the shortest distance and time (using Google Maps Travel either by car or bike for example). Each request will estimate to use several thousand elements, for example, one location geocode calculated distance and travel time to 10k addresses/geocodes per calculation. The output should ideally be able to be generated into a .csv file or MS Excel .xls file. Although not a priority, if possible the solution should also plot all start and destination points on the map. Example: - Start Point Geocode 1 Calculated Distance to Geocode 2,3,4,5,6,7,8,9,10,11,12................... The solution also needs to be fairly easy for users to deploy and analyse data into csv or excel. We have a Google Cloud Console with Distance matrix Api. Thanks