The National Basketball Association has signed a wide-ranging, $100 million deal with Samsung to bring the South Korean company’s technology courtside at its games, according to people familiar with the matter, a strategic move for two organizations looking to expand their global reach. As the NBA’s official provider of tablets and televisions, Samsung will supply the courtside monitors that referees use to review close calls when the NBA begins its new season this week, moving Samsung into the valuable space so close to the action. The three-year deal will instantly make Samsung one of the most visible companies during NBA games, while bringing the basketball league into closer partnership with the electronics giant, which is the world’s largest seller of smartphones and flat-panel televisions. The league is also expected to customize video content for Samsung devices, including televisions.