Open data content and discovery platform Enigma today has announced investor funding of $4.5 million to propel the start-up's next phase of growth. Key to Enigma's early success has been a heavy focus on data cleaning and a customer on-boarding strategy that has targeted just a handful of industry sectors. The next phase will see the development of "more scoped APIs" and a broader targeting of enterprise customers, according to Marc DaCosta, cofounder of Enigma, who spoke with ProgrammableWeb in the lead-up to today's announcement.