The difference between a Crypto Exchange and a Crypto ATM's is to buy Cryptocurrencies that have no delays at the crypto ATM. If you decide to buy Cryptocurrencies, you can do that directly at ATM without any loss and immediately receive your Cryptocurrencies.
While at Crypto Exchange, you must first register and verify which is more complicated. In order to be able to buy Cryptocurrencies with the account you have just created, you still need money to download to your Exchange account. Usually, depending on where the Exchange is located, this may take up to 3 days for the money to appear as a balance on your Exchange account.
As you can see, the easiest, fastest and safest way to buy and sell Cryptocurrencies is via the local Crypto ATMs in Switzerland.