VÉLIZY-VILLACOUBLAY, France--(BUSINESS WIRE)--Regulatory News : Dassault Systèmes (Paris:DSY) (Euronext Paris: #13065, DSY.PA), the 3DEXPERIENCE Company, world leader in 3D design software, 3D Digital Mock Up and Product Lifecycle Management (PLM) solutions, will host a webcast and a conference call on Thursday, April 23, 2015, to discuss its operating performance for the first quarter 2015 ended March 31, 2015. The management of Dassault Systèmes will host the webcast at 8:30 AM London Time -