I my opinion you choose cloud if you have a high variance of user activity. Need 30 servers at day and 1 at night? Then Cloud is correct for you. Always need 4

I my opinion you choose cloud if you have a high variance of user activity. Need 30 servers at day and 1 at night? Then Cloud is correct for you. Always need 4 servers? Then dedicated servers are probably best. Need servers with great ping and are in Europe and not England? Then use dedicated servers in the country where you are at or most of your customers are. But the best is a mixed setup if you can do that. Rent the number of servers you always need (3 for example) and for spikes start up the cloud with one or two more servers if you really need them for an hour.