"I can't wait to get stuck in," Sawyer said.
"I see a lot of potential in this White Ferns group and I feel really optimistic about helping to untap that potential, so they can take their cricket to the next level.
"It's certainly going to be a learning process as I get to know the players and they get to know me, and my cricket philosophies and coaching style."
Sawyer said his underlying remit was to work within the New Zealand Cricket high performance system and help the team focus on the right processes, individually and collectively, in order to achieve sustainable success.
"If you get the players making a priority of the processes and concentrating on the preparation and routines that improve and develop performance, then the outcomes tend to look after themselves.
"That's where consistency of performance comes from, and that's what we're seeking."
White Ferns captain Sophie Devine said Sawyer would represent something of a reset for the group, bringing new ideas, strategies and philosophies into the mix.
"We're really looking forward to working with Ben and receiving the benefit of his experience," she said.
"He's been a key figure in the ongoing success of the Australian women's team and we hope we can tap into that bank of experience and grow together as a team.
"The upcoming Commonwealth Games campaign in Birmingham and the tour to West Indies will be really helpful in that regard - there's nothing like away tours for bringing a group together and sharing a common purpose."
NZ Cricket high performance boss Bryan Stronach said Sawyer had navigated two rounds of interviews impressively, receiving the nod from a panel that included himself, NZC chief executive David White, NZC board member and former White Fern Rebecca Rolls, and a member of the current Ferns playing group.
"We were very pleased with the calibre of the shortlisted candidates, and encouraged by the interest the position attracted," said Stronach.
"Ben has good credentials, a lot of experience; is well respected by his peers – and he's very process-driven, which is important to us in terms of developing and realising the potential in our players.
"His appointment was unanimous within the panel and received strong support from the players."
