Joe Schmidt praised his Ireland squad for coming through "the furnace" of a Test-series decider in Australia and hopes it will result in less experienced players becoming the "diamonds we need".
Ireland claimed a first series win in Australia since 1979 as they edged out the Wallabies 20-16 in the final match in Sydney.
The first three-Test series between the teams saw Ireland turn things around after losing the opener in Brisbane, with Jordan Larmour, Jordi Murphy and Tadhg Beirne all coming off the bench in the decider.
Only 12 of Murphy's appearances have come from the start, while fellow lock Beirne won his first cap in the second Test.
Wing Larmour only has six caps to his name but, with Ireland following up a Six Nations Grand Slam with the triumph in Australia, Schmidt is hopeful the trio can develop ahead of next year's World Cup.
"I think a heck of a lot of it tonight was about character. Maybe we should have got a little bit more out of that first half," Schmidt told Sky Sports.
"The Wallabies then came back and they came back in waves, but I think credit to Jordan Larmour, Jordi Murphy, Tadhg Beirne for coming into a real furnace and to come out on the other side.
"I hope that furnace helps them become the diamonds that we need."
Flanker CJ Stander scored Ireland's sole try, Johnny Sexton kicking the remainder of their points, the fly-half's 79th-minute penalty giving them a four-point cushion that proved decisive.
"We knew it was going to be a cup final for us coming down here, especially as it was the last game of the season so I think we just got out there and gave it 100 per cent, " Stander said to Sky Sports.
"We knew Australia would attack us from minute one. We pride ourselves on our defence. They came at us wave after wave for the last 20 minutes and we stood up and I am immensely proud of the guys."
21. November 2018
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|France to wear rainbow laces in support of Thomas following attack|
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|Anderson rested for final Test|
|Tite applauds Seedorf for Cameroon´s style of play|
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|Scaloni thrilled for Dybala, Icardi|
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|Chile 4 Honduras 1: Sanchez, Vidal shine for La Roja|
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|PSG team-mate Choupo-Moting hopes Neymar injury is not serious|
|McLeish marvels at stylish Scotland´s promotion success|
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20. November 2018
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|Italy 1 United States 0: Politano snatches late winner for Mancini´s men|
|Scotland 3 Israel 2: Forrest hat-trick seals Nations League promotion|
|Brazil 1 Cameroon 0: Richarlison fills Neymar´s boots as skipper suffers injury|
|France & PSG star Mbappe suffers shoulder injury|
|Albania 1 Wales 0: Gunter´s night spoiled by Balaj|
|Leeds and Manchester United to meet in friendly|
|Outspoken Smith leaves Cavaliers|
|PSG star Neymar injured for Brazil|
|Juventus midfielder Can back in training after surgery|
|Rams-Chiefs rollercoaster was the NFL´s modern-day masterpiece|
|Ronaldo an AC Milan target in 2017, confirms Fassone|
|Farah could get back on track at Tokyo Olympics|
|PSG still waiting on Alves and Kurzawa|
|Atalanta reject Gasperini to AC Milan speculation|
|Edmonton Oilers name Hitchcock new head coach|
|JR Smith on Cleveland Cavaliers: Tanking ´was always the plan´|
|Chester signs new Wakefield deal|
|F1 Raceweek: Countdown on to Alonso farewell|
|Rain disrupts Lorenzo´s Honda debut|
|VAR a possibility for Champions League knockout rounds|
|FFP vulnerable in areas, says UEFA president Ceferin|
|Sri Lanka draft in uncapped Peiris to replace Dananjaya|
|Coman back in Bayern training but Lewandowski has knee injury|
|Qalandars land De Villiers in PSL draft, Smith second pick|
|F1 changes helped less talented drivers on the grid - Alonso|