Ong joined MediaCorp Publishing from PR agency Communications DNA in December last year, as deputy editorial director.
Her 15-year career in journalism involves a six-year tenure as editor of Cleo magazine and five years editing the Life! section of The Straits Times.
She was also a senior political correspondent for The Straits Times.
Ong said: "The market has become extremely competitive, with many new players entering the market - some good, some bad. The business is being pulled in many different directions, and the focus for MediaCorp has to be quality and integrity."
She added: "We won't jump on band wagons, nor will we react to fads. We are playing for the long term. As long as we put out a good product, readers will come."
MediaCorp Publishing's key titles include 8 Days, FHM, I-Weekly, Arena, Vanilla and Elle, which recently celebrated its 15th anniversary in Singapore.