19 of Medvedev's 21 victories have been earned on hardcourt
A revitalized Medvedev claimed his initial trophy for 882 days with a win over opponent Moutet in the competition final.
Medvedev, a former world number one, has endured a difficult period, managing just one win at the Grand Slams and experiencing a setback at the US Open.
His unpredictability on the ATP Tour - and struggles with his serving in especial - resulted in him dropping out of the world's top 10 and eventually parting ways with long-time trainer Cervara.
Currently working with Johansson and Rohan Goetzke, he has steadily progressed in the recent weeks - peaking in a hard-fought three-set win over challenger Moutet.
This represents the player's first title following the Rome competition and maiden on a hard court after spring of that year.
The win also means he has achieved twenty-one victories at 21 different tournaments.
"It's the first time I am participating in a tournament with my two daughters at once, so to get a championship is especially meaningful," said world number 14 the champion.
"This title is in honour of my younger daughter my daughter, because the first title I got when my older daughter her name was born was for her."
The tennis star, the former major winner, had lost his past six finals, including in Halle in the past months.
Medvedev's defensive approach and recurring emotional displays on the playing surface had led observers to question if his ability to play at the top level was finished.
But the player has made changes in the past month, attempting to advance forward and play assertively, backed up by an enhanced serving game.
The champion recovered from a deficit in the initial set against the tricky Frenchman, taking four of the last five games to take the lead.
Both players exchanged break points in the middle set before Moutet, attempting for his first ATP Tour title, seized the initiative to create a decider.
He defended four early chances in a competitive third set before the Russian broke to fifteen to secure the win.
Fittingly, he secured the win with a shot at the net area, with his opponent unable to handle a shot after a lengthy match.
