Australia began the series with Nathan McSweeney opening the batting, but he was replaced by 19-year-old Sam Konstas for the final two Tests.
Konstas caught the eye with a rapid innings of 60 on his first day in international cricket, while all-rounder Beau Webster made 57 and 39 not out on his Test debut in Sydney.
Boland took 21 wickets in just three appearances in the series, while the experience of Travis Head and Steve Smith, with 448 and 314 runs in the series respectively, also proved vital.
“We talked about needing a squad, as especially in these five-match series you rarely play the same XI,” explained Cummins.
“Three debutants came in and contributed at different times – it feels like we are building something nice,” added the Australia captain, who said he is likely to miss the forthcoming series in Sri Lanka because his wife is due to give birth in the next few weeks.
“There were some key moments from some of our mainstays who really stood up. You need that to beat a side like India and in those key moments those guys put their hands up.”