How do you load balance for different traffic of different vendors from one point to another point?

It depends upon the circumstances you are working in. For example if you’re working in disasters situation then you have to go for a vendor which respond fast. And when you are working in a relax environment then you have to look at Rank the database of all vendors in your approved list and go for the best option as per Quality, Delivery and Price. Therefore keeping in view of the situation you can best manage your Vendors.