England ended the series with a seven-wicket victory to lose the series 3-2, but despite the defeat, Cook believes that he has seen his team develop during their time on the Subcontinent.
Cook told reporters: "It's disappointing in a couple of those games we didn't play as well as we could have done but we've learned a lot about certain players.
"When we played well we showed we're a match for anyone and to win twice out here, we can be quite proud of that.
"We've all learned a lot from this tour. It's the first time with the new regulations and my stand-out performance was the way James Tredwell bowled today. He's been fantastic all tour, he just gets on with his job and it's great to have such strength in depth in that department."
England continue their winter tour in New Zealand next month.