The machine learning technology developer has added Salesforce Ventures to its investors in a round that increased its total funding to approximately $66m.

US-based artificial intelligence (AI) software producer CrowdFlower raised $20m on Monday in a funding round featuring Salesforce Ventures, the corporate venturing unit of cloud computing firm Salesforce.

Venture capital firm Industry Ventures led the round, which included Canvas Ventures and Trinity Ventures, the VC firms that joined software provider Microsoft’s corporate venturing arm, Microsoft Ventures, for the $10m round CrowdFlower closed in June 2016.

CrowdFlower’s software helps data science teams create customised data that helps train machine learning systems…