All seven state and territory representative teams from its 50-over counterpart, the pre-existing Women's National Cricket League, participated in the WT20's formal six-year span.

The New South Wales Breakers finished on top of the ladder at the conclusion of every regular season, but they lost three consecutive championship deciders against Victoria before eventually winning two titles of their own.

After experimenting with an informal five-match exhibition structure for each of its first two editions,[1][2] Cricket Australia delivered a fully-fledged competition for the 2009–10 season which was made up of a single round-robin before a final between the two highest-ranked teams.

[4] The competition was typically scheduled alongside, and interspersed with, the Women's National Cricket League as each team would draw from the same squad for both formats.

In what was promoted as an "unprecedented"[5] boost to the visibility of the women's game, the 2014–15 season featured eight fixtures paired as double-headers with the men's Big Bash League.