How is the interaction with mongo built on the server side?

Question

MongoDB

Do I understand correctly: if you use the local version of mongo, you need to run the mongo server locally. That is, on the server side written in express js, a number of processes will be launched - mongo, express itself. is this normal practice? as I understand it: you set up the server, you run it on different ports. the client through api knocks on express, which in turn knocks on the local mongo server. Won't such a chain of performance problems create? Does it make sense to install a local version of mongo at all, or is it better to use an internet connection to the database?

Answer 1

Well, when you deploy, everything will work for you exactly as you described: client -> server -> database, there is no other way. But still, why bother with deploying mongo if there is a free MongoDB Atlas?