Conventional wisdom says most startups need to be in Silicon Valley, started by young engineers around a sexy new idea, and backed by VC funding. But as Mikkel Svane reveals in Startupland, the story of founding Zendesk was anything but conventional.

Founded in a Copenhagen loft by three thirty-something friends looking to break free from corporate doldrums, Zendesk Inc. is now one of the hottest enterprise software companies, still rapidly growing with customers in 150 countries. But its success was...