Tim Anstee, who was one of Australia's best across the three days, said that expectation - no matter how far-fetched it might have seemed to outsiders - had driven them to this point.
Redeeming their disappointing fourth previous year at home, the Aussie women's team smashed New Zealand in their final 31-0 and made history in the process by becoming the first team ever - men's or women's - to go through an entire world series tournament without conceding a point.
The Aussie women face Russia in this afternoon's semi-final after the Russians edged past the US 19-14 in their quarter-final match.
The Kenya Sevens team sailed through to the Cup quarters of the Sydney Sevens with a convincing 27-12 win over Wales at the Allianz Stadium in Sydney, Australia on Saturday.
Finally, the weight of possession drew blood for Australia, with Lewis Holland just escaping the Blitzboks' grasp and scoring the first try just before half-time.
South Africa needed to score first after the restart but they were rocked when first John Porch and then Ben O'Donnell crossed to put the game out of reach.
"[Sunday], when we get the football, we have to make smarter decisions", he said.More news: Republic Day: Rahul Gandhi given sixth row seat, Congress livid
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Australia's rugged defense, the feature of its performance throughout the tournament, set the tone for the final.
After a poor 2016/17 by their standards, finishing second to NZ in the World Sevens series, there has been a ruthlessness and energy about Tim Walsh's team this season, witnessed also in Dubai back in December when they won that tournament defeating the U.S. 34-0 in the final.
Conceding two late tries in both halves, the All Blacks Sevens paid for numerous mistakes which were pounced on by the unbeaten tournament hosts.
Despite their defeat in the showpiece match, the Blitzboks managed to overtake New Zealand and return to the top of the standings after three of the season's 10 tournaments.
An attempted New Zealand rally was quickly thwarted in the second half.
Emma Tonegato scored in the same spot shortly before halftime to give Australia a 12-0 lead at the break.
"It's a great way to start 2018 and we're looking forward to the Commonwealth Games and then the World Cup in San Francisco".