Neither do I, then what makes this news such a big headline ? So, it seems like a reputed exchange serving the community since 2015 with a user data base of 2 Million users, this partnership will help both exchanges to serve the community in more better way. Where on one side changelly will get more trading pairs and faster transactions for users on the other hand it seems like Binance might get better exchange rates.
This is just win to win situation but the way Changelly is partnering with companies like coinmarketcap, bittrex and so on. It shows that they really want to boast up their customer database with the help of big companies.