Security is the main concern about crypto exchanges a lot, but what about high speed? Transferring money from one wallet to another? If trading of crypto currency is being carried, the speed will be low when at one time many people are using the exchange, then how do exchanges prevent that from happening?
Not sure what do you mean by high speed? Are you talking about withdrawal speed when you say transferring coins (not money like you are saying) from one wallet to another? Then yeah, some exchanges make withdrawals in batches. Probably goes through some security protocols before allowing the withdrawal to happen. The confirmation depends totally on the network. They can't prevent this. If they want to make it faster, they will have comprise a little bit on the security side.