In a statement on Twitter, Israeli Prime Minister Yair Lapid said the move is "another important step in repairing relations with Türkiye that we have been working on for the past year."
On Sept. 19, the Israeli Foreign Ministry's appointment committee approved Lillian's appointment as Israel's ambassador to Ankara, marking the first appointment since 2018.
Career diplomat Lillian is believed to have played a crucial role in the normalization of ties between Türkiye and Israel.
Lillian has served as Israel's charge d'affaires in Ankara for the past two years. She was also Israel's ambassador to Bulgaria from 2015 to 2019.
Israel-Türkiye relations, long-frosty amid feuding over the Palestinian cause, have warmed in recent months, with energy emerging as a key area of cooperation.
In August, Türkiye and Israel agreed to restore full diplomatic ties and reappoint ambassadors and consuls general after a four-year hiatus.
Also, President Recep Tayyip Erdoğan and Israeli Prime Minister Yair Lapid met in late September on the sidelines of the United Nations General Assembly at the Turkish House (Türkevi) in New York in the first face-to-face talks since 2008.