Car maker is creating a bespoke marketing model in which Accenture Interactive and Spark44 join forces.
Four-year-old company wants to reassure advertisers that have been "hamstrung" by a lack of third-party verification for gaming ads.
S4 Capital reports 71% y/y increase in organic revenue in Q1 2021 thanks to 'whopper' accounts, raises annual target.
Appointment comes after group secured Google Marketing Platform reseller status last year.
Stef Calcraft will lead a new global leadership team.
Former Mindshare leader will enjoy $300 million war chest.
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