"The data we have and the targeting abilities we have are so unique," Hubbard said. "Think about the evolution of tools Twitter gives brands and content owners, starting with brand advertising, then the card product moves to direct response advertising. The next evolution of that card product aims to eliminate that friction and buying, to bring that transaction forward [onto Twitter's platform] in a frictionless way. The goal is to help merchants of physical and digital goods amplify their sales the way Twitter is amplifying views and revenue streams for content creators."
Hubbard draws a comparison between the live conversation happening on Twitter and the live concert business he used to work in. "I have spent the last bunch of years monetizing that passion and electricity of the live moment and as a result am a believer in the power of situational or serendipitous content."
(Read more: Twitter Panel: Why do people really tweet?)
In contrast to Facebook, which recently allowed a test for online shoppers to use their Facebook log-in information to make purchases on mobile apps other than Facebook, Twitter is focusing—initially at least—on its own platform.
Hubbard left his role as president of Ticketmaster's global business two weeks ago, (until recently his title was CEO of Ticketmaster).
At the ticketing giant Hubbard was focused on making Ticketmaster more user-friendly especially online and on mobile devices. A musician himself, he joined Live Nation after the concert giant bought a majority stake in the music marketing company he was running, Musictoday.
(Read more: How business is cashing-in on Twitter)
—By CNBC's Julia Boorstin. Follow her on Twitter: @JBoorstin.