multiple route mapping project web and app development

Looking to have a single route mapped into google maps by copying out of excell or google sheets multiple address and pasting into google maps or similar then having it routed. I am asking for software to be built that will allow to copy out of excell/google sheets multiple address' and then paste into the map and then have the map create the most logical route.I am looking to automate the mapping and routing features of my daily task. I think the required experience is with maps, mapping, building software, web platform, or other app type development in order to automate my project. Then after it is working for me, to be able to sell it to others like me for a fee.