The cost reduction going from dedicated to cloud can be enormous on the order of $30,000 a month down to $5,000(for us + restructuring our architecture). But this idea of 100,000 customers not exactly great because many of them might all be $15.00 a month clients, which is not the same as their previous clients.
Servers remain up the entire time we just have less cost from dedicated machines that were being wasted. They were more power than needed and we consolidated the architecture, and their cloud servers are much less expensive.
