More than 2,500 developers came from different parts of India and beyond to participate in the event hosted by Microsoft — building, designing and testing apps for the Windows platform which commenced last afternoon and continued non-stop for 18 hours.

As the clock struck 8 am, the world’s largest ‘app marathon’ was realised.

Paul O’Neill, Vice-President Guinness World Records Commercial, announced Microsoft’s entry into the Guinness world records for the ‘Most Participants in a Software Development Marathon in One Location’.

A certificate validating the record was presented to Jon DeVaan, Corporate Vice-President for Windows Development at Microsoft, and Bhaskar Pramanik, Chairman, Microsoft Corporation India Pvt. Ltd.

At the closing of the Windows AppFest, O’Neill said, “The spectacle of thousands of developers toiling through the night has demonstrated great commitment to their work.”

Pramanik said: “This Guinness Record at Windows AppFest is a great accomplishment by all the developers who participated. Over the course of the 18 hours of the Windows AppFest, we saw some outstanding talent and many innovative apps being developed.’’