Cal Henderson is CTO and co-founder of Slack, a communication and collaboration platform with more than eight million daily users in over 100 countries. With 1,200 employees across nine cities, Slack was valued earlier this year at more than $7bn after its latest round of funding.

<p>Cal Henderson is CTO and co-founder of Slack, a communication and collaboration platform with more than eight million daily users in over 100 countries. With 1,200 employees across nine cities, Slack was valued earlier this year at more than $7bn after its latest round of funding.</p>

Monocle Radio’s weekly tour of the most inspiring people, companies and ideas in global business, from startups to heritage brands, covering the best in hospitality, design, fashion and retail. 

<p>Monocle Radio’s weekly tour of the most inspiring people, companies and ideas in global business, from startups to heritage brands, covering the best in hospitality, design, fashion and retail. </p>

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