Why I banned corporate memos, Accenture CEO Julie Sweet reveals

Julie Sweet became CEO of Accenture's North American business in 2015, worth $16billion, and transformed the traditional way CEOs communicate with staff.

The executive says one of the best leadership decisions she's ever made is expelling the corporate memo.

She told CNBC: "When I became CEO about 18 months ago, I banned the memo. I said, ‘I'm going to use webcast. I'm going to use video’."

Exchanging the traditional email for live-streamed conversations or pre-taped video messages has improved communication across her team of 50,000 employees, she says, since "it allows you to be more authentic and less scripted."