Short answers, pulled from the story.
The Utah Jazz launched the Rocky Mountain Revue in 1984 as a community outreach campaign. Public relations staffers David Allred and Kim Turner directed this pro-am league to encourage summer interest in basketball.
The Las Vegas Summer League held its first official game in 2004 at UNLV's Thomas & Mack Center. Six teams participated that year including the Boston Celtics and Cleveland Cavaliers while Warren LeGarie helped expand the event over three successful summers.
Randy Foye won the first Las Vegas Summer League MVP award in 2006 while playing for Minnesota. Nate Robinson claimed the title in 2007 representing the New York Knicks before Jerryd Bayless received Top Rookie honors in 2008.
Games last forty minutes which matches the duration used in FIBA and WNBA play instead of the standard forty-eight minute NBA game length. Multiple two-minute overtime periods follow regulation until true sudden death occurs with the first period played in its entirety unlike subsequent periods.
The Orlando Pro Summer League began operations in 2002 and ran until 2017 while skipping years in 2005 and 2011 due to scheduling conflicts. The Dallas Mavericks won the final championship of the Orlando league in 2017 before teams migrated to Las Vegas.