AppNexus signs exclusive Open AdStream® Distribution agreement in Korea with A1 Platform

Press Release

Seoul, Korea - Jae Woo Chung, until recently President of The Trade Desk in Asia, today announces the launch of A1 Platform Company and exclusive distribution of AppNexus Open AdStream® in Korea.

The A1 Platform Company is a technology and services business created to help Korean publishers capitalise on the significant opportunities in the rapidly developing programmatic market.

AppNexus' President Michael Rubenstein said, "Jae Woo Chung brings immense experience to A1 Platform Company and we are delighted to be working with him in Korea."

By offering unique technology solutions, ongoing technical support and strategic consulting, A1 Platform Company aims to help Korean publishers navigate through changes in the ₩676 billion (Korean won) Display Advertising Market and tap into the fast-growing market in mobile. Core to this new offering is exclusive distribution in Korea of AppNexus Open AdStream®, the premium publisher ad-server formerly known as Xaxis for Publishers.

A1 Platform Company started providing services to Open AdStream® users in December.


AppNexus is a technology company that provides trading solutions and powers marketplaces for Internet advertising. Its open, unified, and powerful programmatic platform empowers customers to more effectively buy and sell media, allowing them to innovate, differentiate, and transform their businesses. As the world's largest independent ad tech company, AppNexus is led by the pioneers of the web's original ad exchanges. Headquartered in New York City with 20 global offices, AppNexus employs more than 750 of the brightest minds in advertising and technology who believe that advertising powers the Internet. For more information, follow us at @AppNexus or visit us at