It was a victory built on teamwork, concentration and spirit.
Arteta had called on his players to show "pride in the shirt" ahead of the game, and they showed exactly that.
Chelsea may have dominated possession and carved out the better chances, but the Gunners did not stop working. After Emile Smith Rowe had given the visitors a first-half lead, Thomas Tuchel’s Champions League finalists could not find a way back.
"It has been 10 years since we won here so it’s a really important result for the club, for our fans and as well for our players," Arteta said after the game.