Through January to October 2014, the total value of ad tech deals totalled $3.8 billion, according to a report from investment bank Coady Diemar Partners at the time. And things are about to get bigger.

Terence Kawaja, founder and CEO of media M&A advisory LUMA Partners, says his firm is advising on several deals, due to be announced this year, that will likely bust the half a billion dollars mark.

“If you look at the next six to 12 months, you’re going to see an array of transactions being announced at scale,” Kawaja tells Beet.TV in this video interview. “We’re working on a number of very considerable transactions, a growing proportion of those are over $500 million.”

Kawaja says an increasingly diverse range of buyers is coming to the pot – including big internet firms, CRM vendors, Asian ecommerce conglomerates, telcos and media companies. That diversity is what’s driving the deals Kawaja says LUMA clients are gearing up for.

Technology intermediaries are changing the way media is sold and ads are bought,” he adds. “One of the most interesting things about this sector currently is the growth and the depth of the robust strategic buyer pool.”

The prospects for IPO’s remains weak, he explains.

This interview is part of a series of videos leading up to the DMEXCO conference in Cologne. The series is presented by 4C + Teletrax.