Empire Market is famous and most popular Onion Network Marketplace at the time. Being this popular it faces the problem of endless Ddos attacks witch leads main Empire Market link to be down, and alternative mirror too. That lead to empire marketplace need to make more and more URLs and tor links and links. And the thing is that there are not many ways costumers can find a legit Empire Market URLs.
So that's why Empire Marketplace decided to create an official website where their users can at any time discover fresh URLs and onion mirrors, for instant access to Empire Market.