Service marketplaces must continuously provide value in terms of either discovery, convenience or trust. In line with this, successful service marketplaces tend to be either repeated-discovery, online-first or SaaS-enabled.

My personal favorite are these vertical SaaS marketplaces. They start as vertical SaaS software, then layer in a marketplace later on. Usually, it begins with a software solution that is focused on a highly technical business problem. For example, a software provider may give away or charge a very low fee for something that has high intrinsic value... See more

Marketplace: network where money/transactions flow between two or more sides with distinct groups of users on each side; successful marketplace where supply and demand are attracted to the same place