Is the era of the ad agency almost over? Here's what 4 of the industry's top leaders told us in Cannes

The ad agency model is under pressure from all sides, including new competitors, a lack of access to data, and clients shifting agency duties in-house.

Business Insider caught up with several industry powerhouses in Cannes, including top marketing execs from Unilever, Samsung and VISA as well as the head of industry advisory firm MediaLink.

Here’s how they see this drama playing out.

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