Discovery Chief Operating Officer Peter Liguori to leave company...

Discovery Chief Operating Officer Peter Liguori to leave company at end of year … Mobile technology provider Syniverse names Scott Hatfield, ex-Capgemini, chief technology officer … Tribune Media Services promotions: Dan Kazan to CEO; John Kelleher to president-chief operating officer … Rick Parkington, ex-General Dynamics, becomes senior vice president-chief technology officer, network and cybersecurity firm STG.