"He is experienced and has experience both domestically and abroad. He has worked in large and smaller clubs and got the maximum from his players.
"He is a trainer who has shown that he gives talented young players a chance - our basic interest.
"I am very pleased with the way we have worked to achieve this. It was an exciting and challenging period, with an excellent result for Ajax," said chief executive Rik van der Boog.
Jol, who began his coaching career with Twente Enschede and moved on to RKC Waalwijk before joining Tottenham in 2004, will be in charge of transfer policy and the youth set-up as well as the Ajax first team.
But his main mission will be to win the Eredivisie title for the first time since 2004 and try to re-establish the team as a force in European competitions.
Ajax have won the European Cup on four occasions but have not played in the group stage of the Champions League since 2005-06.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.