High search volume, virality, and an economic moat are just some of the factors that help Point Nine Capital's investors decide if a cloud-software startup is worth funding.
Nice article by Christoph Janz at PNC.
I would like to argue that almost any business (cloud or not) should have "virality". Virality is one of these overused words which does not mean much, Christoph does a nice job of explaining two forms - sharing and publishing.
Another one is the economic moat, find a way to have lockin, ideally for the right reasons (vs sabotaging the user so that they are forced to you product).