After a hiatus from ad tech, Brian O’Kelley is back with Scope3, a new startup to help ad tech companies reduce their carbon emissions. The cynical POV: He’s cleaning up the mess he helped make. It’s a fair criticism, O’Kelley says: “I take accountability for my role in this.”

Retail media has reached escape velocity. “We've grown from basically $0 to a business that's now bigger than The New York Times,” says Walmart Connect VP Jeff Clark. But Walmart still needs to get it right.

Meet your new CTV acronym: HVOD (hybrid video on demand). Why do we need it? The rise of AVOD doesn’t mean SVOD is going anywhere, says Sarah Lewis, global director of CTV at video platform ShowHeroes and a proponent of HVOD.

Roku is bullish on shoppable video. The idea of television commerce isn’t new, of course. QVC, HSN and infomercials, anyone? But the technology exists today to breathe new life into the opportunity, says Peter Hamilton, Roku’s head of television commerce, on this week’s episode of AdExchanger Talks.