Zoom Video Communications, Inc. (NasdaqGS:ZM) is in talks to invest in the blank-check deal that would take Cvent, Inc. public, according to people familiar with the matter. Dragoneer Growth Opportunities Corp. II (NasdaqCM:DGNS) is in discussions with potential investors including the video-chat platform about a private placement to support a deal with Cvent, said the people, who asked to not be identified because the matter isn't public.