Crypto exchange platforms.
In that ranking order we can see that Coinbase is the top and probably the best trading platforms. I found out that coinbase doesn't only offer trading services it also license other businesses to use its API for crypto payment related transaction.
I dont think Coinbase in 1st place should be Binance because at Binance the transaction fee is cheap, there are many types of transactions there and there are many coins to trade and hold. At Coinbase we have too few options, and it also limits many countries to trade there. I encourage you to trade at Binance or Huobi, it is better, there are many very strong altcoins pump and the trading volume is also the highest of all the other exchanges.