A victory over Australia all but guarantees India's place in the semifinals.
Australia lead the Group A table with 8 points, while India and South Africa sit tied at 6 points each. A victory over the six-time champions all but guarantees India's progression due to their healthy Net Run Rate (NRR) over South Africa.
If India lose to Australia, Harmanpreet Kaur's squad will have to rely on Bangladesh pulling off a massive upset against South Africa earlier in the day to keep India's campaign alive.
Speaking to media on the eve of the big game, vice-captain Smriti Mandhana stressed that India will play an "aggressive brand of cricket" against Australia.
"It's a big game obviously. We've all spoken a lot about how we really want to be playing the aggressive brand of cricket and that's something which we'll all look to do tomorrow," she told reporters.
Mandhana acknowledged that while the batting unit hasn't fully fired at its maximum potential this tournament, everyone is "itching" to step up against the Aussies.
"We've been speaking a lot in the batting meeting about how we really want to go out there and bat with intent. It's not happened as much as we would have loved to. But having said that, I think everyone in the batting unit is itching to go," she added.
The southpaw emphasized that franchise leagues like the WPL and WBBL have drastically reduced the gap between India and Australia in the last few years, preparing the players to manage high-pressure situations far better.
"We did well in the T20 format in Australia. We'll take a lot of confidence from that. With the WPL, I feel the girls are also very well prepped in terms of taking the high pressure games a little better than what we could before.
"But, yeah, again, I feel the gap has definitely narrowed. With a few of our players playing Big Bash, the experience is being shared and I feel the kind of cricket Indian team has played in the last four, five years - the gap has narrowed down."
Mandhana hoped to build a strong foundation with opening partner Shafali Verma against Australia.
"We had a very quiet series in England. We both were really pumped to get back to giving the good starts for India because, of course, whenever we lay the foundation, more or less, we are in a good place.
"So I'm really happy with the way she's striking the ball and I hope that we can switch up our partnership together," she noted.
As left-handed batter herself, Smriti Mandhana revealed that she grew up idolising the legendary Matthew Hayden and Kumar Sangakkara, frequently watching their videos to fix her form during rough patches.
After spotting Hayden on broadcasting duty during the tournament, she approached the Australian to discuss technical aspects of the game, specifically asking about his bat grip.
"I have looked up to Sangakkara sir and Matthew Hayden quite a lot. I remember even in my bad days, I would watch their videos. So, when I saw him (Hayden) doing the commentary, I got really excited.
"We had a good discussion and I wanted to know a few things about the grip etc. I also told him that chatting before an Australian game, I don't know if you would like to do that, but he was really kind and sweet. He shared a lot of things, which I hope I can apply to my batting," she said.
(With PTI Inputs)