Location, Location, Location

Mesmo que o seu negócio seja a bolsa de valores:

If traders are located 100 miles away from an exchange, they face a delay of one millisecond whenever they seek to trade a price via their computer screen. Few serious investors can afford to be that late to prices that flash so quickly. The blink of a human eye takes 300 milliseconds; many traders now operate in the smaller realm of microseconds.
Mr Greifeld said there might have to be measures to ensure speeds within the co-location facilities were the same. “We might have to give everybody the same length cable, believe it or not,” he said.

(via marginal revolution)
A propósito, as mais rápidas bolsas do mundo usam linux.