Cox Media Group's Gamut, the locally based OTT ad sales operation, has promoted Soo Jin Oh to president.

Oh succeeds Rachel Williamson who, after four years as President, departed the post in January 2020.

For the past eight months, Oh has served as co-chief operating officer of the local TV station group’s OTT business unit. Before that, Oh had been senior vice president of client solutions at Gamut. She has been with Gamut since 2017.

Previously, she held senior positions at Google.

Major local TV stations have started up OTT (over-the-top) advertising-sales units, which can sell advertising packages --- local and regional -- to marketers in combination with linear local TV inventory. In addition, packages can include local first-party data from local and regional marketers.

TV station groups believe this can give them added scale in generating advertising revenue. They see rapid advertising growth in the burgeoning industry of premium connected TV/OTT video platforms.

Tegna’s Premion -- one of the oldest OTT operations, which started up in 2016 -- grew 40% to $145 million in revenues for the 2020 year. The company expects a 45% to 50% revenue gain in 2021.