Q&A session with Christoph Gamper, CEO and co-owner of the Durst Group and Dietrich von Seggern, CEO of callas software: The Durst Group, a global leader in digital printing and production technologies, announces the acquisition of callas software. callas is one of the leading providers of prepress automation and PDF technologies and plays an essential role in many print workflows – either directly or as an OEM component in leading prepress products. With this acquisition, the Durst Group strengthens its software strategy and focuses on openness and connectivity within the printing industry.