AOL's Tim Armstrong: We expect Arianna Huffington to sign a new contract - video

Tim Armstrong, chief executive officer of AOL, joins the Guardian's Mark Sweney at the Speakers' Lounge at the Cannes Lions festival to discuss the changing advertising and digital media landscape. He talks about the switch to algorithm-driven 'programmatic' advertising and the prospects for Huffington Post, which was acquired by AOL in 2011