Swansea City manager Brendan Rodgers said his players showed great courage and resolve to beat Arsenal.
The Swans recovered from conceding an early goal and then losing a 2-1 lead to secure a famous 3-2 victory.
"That's the resilience that's in the team. There's a wonderful resolve within the group. They're a very tight group," said Rodgers.
"We work hard every day in relation to improving the performance level and in pressure moments."
After finally overcoming the hurdle of securing their first Premier League away win by beating Aston Villa earlier in January, Rodgers feels victory over fifth-placed Arsenal represents another key psychological moment for his players in their debut top-flight season.
He added: "The players deserve all the credit - the courage they showed to keep showing for the ball, to keep playing under severe pressure and against top players.
"And remember where a lot of these players have come from. Over seven of these players have played in the Championship and even below that.
"So for them to go and continue with our style, which we know is affective, against one of the top teams in European football, makes it even more pleasing."
Swansea's passing philosophy mirrors Arsenal's renowned style of play, and the home side managed a rare feat by enjoying the majority of the possession against the Gunners at the Liberty Stadium.
Promising displays earlier in the season against Manchester United, Manchester City and Chelsea had yielded no return, but Rodgers said the victory over Arsene Wenger's side was further vindication of their principles.
"We were talked about as having the swagger without the substance but hopefully over these opening months we've shown that we're going to be here to fight," he said.
"We'll play how we want to play and not how other people perceive us and how they want us to play.
"We have a game we're very proud of and we know it gets us results. We'll hopefully continue to improve that side of our game."
Swansea cancelled out Robin Van Persie's fifth-minute opener when Scott Sinclair scored from a penalty after Nathan Dyer had fallen under Aaron Ramsey's challenge.
Wenger was aggrieved with the referee's decision to award the spot-kick, but Dyer was adamant the referee had made the correct call.
"I got a kick on the back of my foot," said Dyer, who then put Swansea 2-1 ahead after 57 minutes and claimed the man-of-the-match award.
"I was on my standing leg and it took me away so obviously I've gone down. It was a clear penalty."
Swansea's victory - their first major top-flight scalp since the John Toshack era at the beginning of the 80s - takes Rodgers' side up to 10th place in the table.
Striker Danny Graham fired the winning goal a matter of seconds after Theo Walcott had exploited a huge gap in the home defence to draw level.
"It's an opportune moment when a team scores because sometimes teams can go to sleep," said Rodgers.
"The ball from Gylfi Sigurdsson was a wonderfully weighted pass and Graham's finish from the angle was superb."