Nineteen of the Russian's 21 victories have been achieved on hard courts
A revitalized the Russian player claimed his first championship for 882 days with success over Frenchman Moutet in the tournament title decider.
Medvedev, a former world number one, has endured a torrid season, winning just one win at the Grand Slams and undergoing a setback at the New York tournament.
Medvedev's unpredictability on the ATP Tour - and struggles with his serving in particular - led to him dropping out of the top ten and finally parting ways with long-term coach his previous coach.
Presently training with his coach and Rohan Goetzke, the tennis star has gradually progressed in the recent weeks - culminating in a hard-fought 7-5 4-6 6-3 win over Frenchman Corentin Moutet.
It is his first trophy since the 2023 Rome Masters and initial on a hard court since spring of the previous year.
Victory also signifies he has won twenty-one championships at 21 distinct tournaments.
"For the first time I am participating in a event with my both daughters together, so to secure a title is really nice," commented ranked player the champion.
"This victory is in honour of my second daughter Victoria, because the initial championship I won when my child Alisa was delivered was for her."
The athlete, the 2021 US Open champion, had failed in his past six finals, featuring in Halle previously this season.
His retrieving play style and frequent reactions on the playing surface had led commentators to question if his capacity to play at the top level was over.
However the 29-year-old has made changes in the past month, attempting to approach the net and play aggressively, backed up by an better serve.
The champion came back from a disadvantage in the opening set against the tricky Moutet, securing 4 of the concluding five exchanges to go ahead.
The competitors exchanged break points in the following set before Moutet, striving for his first ATP Tour title, gained dominance to create a final set.
The opponent defended four early break points in a competitive deciding set before the Russian broke to 15 to serve for the match.
Appropriately, the winner secured the win with a point at the net, with the Frenchman failing to manage a volley after a lengthy match.
