Sorrell spokesman describes threat as "bollocks".
She has been a senior executive at Accenture for 20 years.
AT&T has fully acquired digital platform AppNexus for a reported $1.6 billion.
"If you want to talk about business models, you need to understand something about business!"
Creative and analytical tools allow advertisers and agencies to test ads before a formal launch.
Campaign caught up with Google CMO Lorraine Twohill to talk about the Cannes Creative Marketer of the Year's evolving approach to marketing.
The answer is to work only with influencers who are genuine and are part of your brand story, said top marketers from Diageo, Samsung and eBay.
Unilever's CMO, Keith Weed, call on the rest of the industry to follow suit.
The platform, launching in the UK and US, is slated to roll out soon in more markets, including Hong Kong, Australia and Singapore.
Spotify's co-founder and chief executive Daniel Ek was named the media person of the year but requested for the entire organisation to receive the honour.
Facebook chief executive Mark Zuckerberg wants to put forth a set of content principles to manage the social platform in the wake of the Cambridge Analytica crisis.
Publicis Groupe has unveiled its much-anticipated AI-powered platform Marcel at its VivaTech event this morning in Paris.
Formation of cross-agency 'Team Energy' helps WPP hold onto longtime client following a competitive review.
Tencent will work closely with institutions and corporations including British Tourist Authority, BBC, British Fashion Council, Springer Nature and others to launch various 'Culture Creative' initiatives.
Nissan has been on a mission to consolidate its global digital presence onto a single platform, Nissan Pace.
Reports about false and faulty metrics have caused 62% of marketers to pull back on spend, according to research by the CMO Council.
WPP has bought full ownership of Y&R and Wunderman joint-venture agency assets in Southeast Asia, Taiwan and Dentsu Sudler & Hennessey in Japan.
The updated Spectacles incorporate some of the most requested features—water resistance, improved microphones and photo mode.
These results were in tandem with growth in Twitter's daily-active-users (DAUs), which grew 10% year-on-year.
Organisation calls on brands worldwide to go beyond the legal steps required by GDPR, and to fundamentally recalibrate their approach to data.