News Release
D.A.Consortium Inc.

DAC and the U.S. company MediaMath collaborate on thenext generation of advertising solutions for JapanTokyo, June 23, 2021 ---D.A.Consortium Inc. (DAC) will work together with MediaMath,the global leader in programmatic ad technology, to establish a new company in Japan.
In recent years, there is an urgent need for programmatic advertising to respond tonext-generation demands through the development of optimal services that comply withglobal standards, the promotion of common IDs and other initiatives. Against thisbackdrop, MediaMath, which leads the global programmatic advertising market, andDAC, a digital marketing company with online advertising and ad technology businesses
in Japan and APAC countries, have agreed to develop a service infrastructure in Japanand collaborate further through the new company.
The new company, MediaMath Japan KK, will leverage the strengths of both DAC andMediaMath to introduce the latest technologies, such as Connected TV (CTV) and Digital
Outdoor Advertising (DOOH), in Japan. In addition, the company will provide safe andsecure advertising services to consumers and advertisers by improving the transparencyof programmatic advertising, by strengthening privacy regulations and by popularizingand expanding a global, cookie-less standard in Japan.
■ About MediaMath Japan KK
Representative ： Naoki Toyofuku
Head Office： 3-2-6, Kasumigaseki, Chiyoda-ku, Tokyo
Established： June 2021
Business： Programmatic advertising operations（＊）MediaMath and DAC’s programmatic ad initiatives-MediaMath provides the programmatic advertising delivery platform "Terminal One Marketing
Operating System," (T1) which includes DSP and DMP, to brands, listed companies andadvertising companies in a wide range of industries. T1 features high transparency andcontrollability, and the data accumulated in daily operations can be visualized in aneasy-to-understand manner on the dashboard, allowing operators to execute fully customized
campaigns.
-DAC and Platform One Inc. (P1), a programmatic advertising company established in 2011,
developed YieldOne🄬🄬, one of Japan’s largest supply side platforms (SSP), and MarketOne🄬🄬, aclean and brand-safe DSP. With top-level ad technology development capability in Japan, DAC
is dedicated to strengthening brand safety against ad fraud and has strived to not onlymaximize ad performance but also protect the brand image with private marketplace (PMP)solutions. In addition, with the integration of AudienceOne🄬🄬, the largest DMP in Japan, DAC isable to utilize its wealth of data and unique algorithms to drive improved ad delivery andincreased media revenues for media companies.

#####＜About MediaMath＞ https://www.mediamath.com/jp
MediaMath helps the world’s top brands deliver personalized digital advertising across allconnected touchpoints. Over 9,500 marketers in 42 countries use our enterprise software every
day to launch, analyze, and optimize their digital advertising campaigns across display, native,mobile, video, audio, digital out of home, and advanced TV formats. Founded in 2007 as a pioneerin “programmatic” advertising, MediaMath is recognized as a Leader in the Gartner 2020 Magic
Quadrant for Ad Tech and has won Best Account Support by a Technology Company for two years
in a row in the AdExchanger Awards.
MediaMath initiated an industry-wide effort to create a 100% accountable, addressable andaligned supply chain through SOURCE ecosystem. SOURCE by MediaMath is a technical andcommercial framework for agencies, brands, tech companies, and content owners designed toprovide long-term sustainable solutions for a clean digital media supply chain with brand-safe,viewable inventory. MediaMath has offices in 15 cities worldwide and is headquartered in New York
City. To learn more about how MediaMath helps innovative marketers delight their customers anddrive real business outcomes, follow us at @mediamath or visit www.mediamath.com.

＜Corporate Information＞■ D.A.Consortium Inc.
https://www.dac.co.jp/english/
Since its establishment in 1996 during the early days of online advertising, DAC is leading theindustry in market formation and growth as it steadily expands its operations with the digitaltransformation of information and lifestyles.
Currently, DAC operates advertising and marketing businesses centered on digital technology bothin Japan and overseas. The company provides comprehensive support, from consulting andplanning to ad space purchasing, selling, management and results analysis. With a firm
understanding of the characteristics of different media, DAC also produces creative, develops andprovides solutions that bridge its wealth of data with advanced technologies, and supports globalpromotional initiatives.
With the mission, “Empowering the digital future,” DAC will continue to be at the forefront increating new forms of advertising and marketing and providing new value to society.
Representative ： Masaya Shimada, President & CEO
Head Office： Yebisu Garden Place Tower, 4-20-3, Ebisu, Shibuya-ku, Tokyo
Established： December 1996
Business： Online media transaction related business, Solution business,
Ad Operations Business

For inquiries regarding this News Release
D.A.Consortium Inc.
Corporate Strategy Group Public Relations / E-mail：ir_inf@dac.co.jp