Fill a large wine glass (or other glass of your choosing) with ice cubes.
Add 3 oz. (or 3 parts) chilled Prosecco
Add 1 oz. (or 1 part) Aperol liqueur.
Add 1 oz. (or 1 part) Campari liqueur
Stirgently.
Top with a “spritz” (1 oz, a splash, or 1 part) of chilled soda water or flavorless sparkling water.
Garnish with slice of fresh orange and maraschino or Luxardo cherry, if desired.