Steve Hansen has targeted a third World Cup triumph after signing a two-year contract extension with New Zealand.
Hansen, who coached New Zealand to victory at the 2015 World Cup and was an assistant coach of the team which won in 2011, was initially due to step down after next year's tour to New Zealand by the British and Irish Lions.
But his new deal will now see him through to the end of the 2019 World Cup in Japan after being unanimously approved by the New Zealand Rugby Board.
"Steve's winning record is unsurpassed in the modern era," said New Zealand Rugby chief executive Steve Tew. "Since becoming head coach in 2012, he has recorded 52 wins in his 57 tests to date with two draws and just three losses. That's remarkable and unparalleled in international rugby.
"While Steve has a fantastic winning record, equally positive has been his intuitive ability to continue growing the team through meticulous selection and rigorous preparation and to inspire the players to reach even greater heights."
Hansen, 57, coached Wales before joining the All Blacks' coaching staff in 2004. He took over from Graham Henry as head coach after the 2011 World Cup and has lost only three of 57 tests in five years.
"It's not a decision that was made lightly or easily," he said. "As I've said quite often, it had to be right for my family and it had to be right for the team.
"From my own point of view, I had to ask a few questions and they were, simply: Did I have the energy and passion to get up and continue to drive this team the way it needs to be driven?
"The second condition I had to ask myself was whether I could continue to improve as a coach. I believe I can and I must because I'll be asking other people to improve themselves."
Hansen said he also had to consider whether or not his reappointment would be right for the team.
"The biggest non-negotiable that we have is that everything has to be right for the team first and the individual second," he said. "In discussing it with various people, both management and players, we got the feedback that they agreed and they wanted me to continue.
"Once I got over those discussions and that thought process, it was a real no-brainer. It's the best job going. I love what the All Blacks are and the history that comes with them and the legacy they've created I'm just very grateful and love being part of it."