Home Ad Exchange News The AppNexus Reveal: We’re A Demand-Side Platform Says Pres Rubenstein

The AppNexus Reveal: We’re A Demand-Side Platform Says Pres Rubenstein

SHARE:

AppNexus InvestmentAdExchanger.com was able to catch up with AppNexus president Michael Rubenstein after his company’s recently announced “$5-million Inside, Up Round.”

What’s all this AppNexus “gateway” talk, you ask?

It’s official – AppNexus is a demand-side platform.

Rubenstein was unequivocal when elaborating on what was meant in the release by the term “gateway.” He said that AppNexus should be considered a demand-side platform (DSP) and that the company buys across exchange and inventory aggregators though declined to be specific on who these partners were for now.

Rubenstein added that AppNexus’ goal is “to create the most scalable technology platform for buying in real-time. Today, we have the most real-time inventory relationships in the market.” Like many internet companies, he added that the competition between AppNexus and DSPs such as x+1, MediaMath, Invite Media, CPM Advisors, Adchemy,Fox Audience Network, DataXu, Turn, AdBuyer.com, Triggit and others as a reflection of the nature of internet business where companies both compete and work together in partnership.

In regards to speculation that an “inside” round may indicate some weakness or issue with the company, Rubenstein was equally unequivocal and said that in fact “the value of our company is skyrocketing” and AppNexus’ investors such as Kodiak, First Round and Ron Conway wanted to put more money in before any other investors had a chance to. Momentum for the latest round of funding started well-before his arrival, Rubenstein said.

By John Ebbert

Must Read

Viant Had A Good Q4, But Still Needs To Punch Up At Bigger Platforms

Viant reported its Q4 and full-year 2025 earnings on Wednesday evening and investors appeared pleased.

Puzzle pieces connected together. Two puzzle pieces with cables coming together on yellow background. Problem solving concept, business solutions and ideas. Vector illustration.

The Boring Infrastructure That Could Make Agentic AI Happen For Ad Tech

AI agents are moving fast, but MadConnect says ad tech’s slow, messy plumbing still needs an overhaul before agentic marketing can really work.

Understanding MCP, The ‘Universal Adapter’ For AI In Advertising

Your TL;DR on MCP, the open standard that lets AI models connect to tools, remember context and run workflows across platforms.

Privacy! Commerce! Connected TV! Read all about it. Subscribe to AdExchanger Newsletters

YouTube Americas Leader Tara Walpert Levy Says Measurement Proves Creators Do TV Ads Best

“We are focused on being where the world watches video,” said Tara Walpert Levy, YouTube’s VP, Americas at the Convergent TV conference in NYC on Thursday. “And to us that now is TV.”

Paramount Skydance Is Trying To Buy WBD. Now What?

Late last week, Netflix walked away from plans to acquire Warner Bros., clearing the way for Paramount Skydance to scoop up the whole company with its hostile takeover bid.

Sallie Has An Ad Business And Meta Is Declining Credit Cards

Sallie, the major issuer of US education loans, is getting into the retail media network business.