Italy beat Germany 3-0 to qualify for the Billie Jean King Cup semifinals on Thursday a result which eliminated Group D rivals France.
Martina Trevisan battled past Eva Lys 7-6 (8/6), 6-1 in the opening rubber before Jasmine Paolini eased past Anna-Lena Friedsam 6-3, 6-2 to ensure the Italians return to the last four for the first time since 2014.
Debutant Lucia Bronzetti and Elisabetta Cocciaretto completed the Italian rout with a 6-4, 6-7 (4/7), 7-6 win over Friedsam and Laura Siegemund in the doubles.
Italy, who beat France 2-1 on Wednesday, finish top of the three-team group.
The first in each of the four groups advance to the semifinals, scheduled for Saturday, before the final on Sunday.
Australia, runners-up in the 2022 final to Switzerland, beat Kazakhstan 2-1 to notch up their first win of the tournament after losing to Slovenia on Wednesday.
Storm Hunter gave the Australians their first point against Anna Danilina 7-6 (7/2), 6-4.
Yulia Putintseva pulled Kazakhstan level with a 6-0, 7-5 win over Kimberley Birrell.
The doubles, with the same players, made the difference with Australia winning a super tie-break 6-1, 4-6, 1-0 (10/5).
The final tie in Group B sees Kazakhstan take on group leaders Slovenia on Friday.