How do progressive jackpot slots actually work?

In general, most progressive slot machines are linked together across several casinos. This means that every time a player places a bet on a machine which is a part of this network, the amount of the jackpot grows. The connected gambling venues can be completely independent of one another but they have to share the same software provider. However, it should be noted that there are several types of progressive slot machines, depending on the manner in which the sum is accumulated.