Node modules are installed whenever we use the "npm" command. All the libraries we Install go to Node modules

1. Node modules are never delivered to the hosting Location. ???

   Because the node modules unessasary increase the memory and all the dependencies are already stored in your package.json or package-lock.json.

2. It is better to avoid downloading the dependencies along with some referral project or code .????

   When we use any dependencies and install any, they are installed keeping your local environment into consideration.

   But the dependencies that you might download along with the code might not suit your environment and you might face an issue.