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Stewart Butterfield - Wikipedia
Stewart Butterfield - Forbes
Stewart Butterfield | Biography, Slack, & Facts | Britannica Money
Slack CEO Stewart Butterfield's Life and Career Rise, in Photos
The $5bn tech boss who grew up without electricity - BBC
Slack CEO Stewart Butterfield to Leave Salesforce in January
Slack CEO Stewart Butterfield is leaving in January - The Verge
Slack CEO Stewart Butterfield is leaving Salesforce two years …
Q&A with Slack CEO Stewart Butterfield on the future of work
Stewart Butterfield (Slack, Flickr) Talks AI, Software and Big Tech ...