It featured eight teams playing in a round-robin group stage, followed by a Finals Day.
It ran alongside the Rachael Heyhoe Flint Trophy, as well as featuring double-header matches with the men's T20 Blast.
Southern Vipers, who were the defending champions, won the tournament, beating The Blaze in the final.
A bonus point was given where the winning team's run rate is 1.25 or greater times that of the opposition.
In case of a tie in the standings, the following tiebreakers were applied in order: highest net run rate, team that scored the most points in matches involving the tied parties, better bowling strike rate, drawing of lots.