WPP, XAXIS AND APPNEXUS ANNOUNCE STRATEGIC TRANSACTION AppNexus Acquires Open AdStream Ad Serving Platform from Xaxis; WPP Will Take Equity Stake in AppNexus with $25 Million Investment Deal Enhances AppNexus’ Position as Industry’s Largest Independent Ad Serving Platform; Strengthens Xaxis’ Position as Leader in Programmatic Media Products
AppNexus Acquires Leading Advertising Viewability Company Alenty
AppNexus: Powering the ads that power the internet
AppNexus is creating a better internet
AppNexus & Millennial Media Launch World's Largest Premium Mobile Ad Exchange
AppNexus is Made in New York

APPNEXUS TECHNOLOGY POWERS THE MOST INNOVATIVE TRADING SOLUTIONS AND MARKETPLACES FOR INTERNET ADVERTISING.

Build A
Differentiated
Ad Network
Improve performance and scale your business with the industry's most customizable technology stack.
Build A
Trading
Desk
Focus on developing and showcasing your unique expertise, not on building infrastructure.
Build An
AppNexus
App
Bring your vision to life on a platform connected to more of the industry's buyers and sellers.
Build A
Custom
Exchange
Monetize your inventory and drive higher yield with access to more sources of demand and best-in-class tools.

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AppNexus News

WPP, Xaxis, and AppNexus Announce Strategic Transaction
September 22, 2014

WPP, Xaxis, and AppNexus announced today a strategic transaction that will augment AppNexus’ position as the industry’s largest independent ad technology company. Under the terms of the agreement, AppNexus will acquire Xaxis’ premium ad-serving technology, Open AdStream® (OAS), now known as Xaxis For Publishers. In addition, WPP will invest $25 million in AppNexus, adding to the $85 million in funding the company recently raised at a valuation of $1.2 billion.

AppNexus Announces Investment at $1.2 Billion Valuation
August 18, 2014

One of New York’s most successful and highly valued technology companies attracts investment of up to $100 million for opportunistic acquisitions and aggressive expansion in booming markets

AppNexus Events

Oct
9
Powering 300+ Web Services on LAMP & Beyond (Portland)
AppNexus, 711 SW Alder Street (Suite 400), Portland, OR, 97205

In less than seven years, AppNexus has grown from a big idea into the largest independent AdTech company in the world. Join us on October 9th in Portland as Principal Engineer, Larry Finn, discusses the architectural and engineering challenges of achieving this scale. In this tech talk, learn how AppNexus uses the LAMP stack in production and the many lessons that come from running a complex, heavily-used product.

Nov
5
AppNexus Summit NYC 2014
New York, NY

The AppNexus Summit is returning to New York City! Request an invitation to join the world's largest independent advertising technology company for an exclusive event that will empower you to innovate in a vibrant and growing ecosystem. Learn about upcoming product enhancements, engage in lively debate, and discuss the future of the industry while networking with some of the most enlightened minds in digital advertising.