David Sacks (Yammer) & Stewart Butterfield (Slack): Unicorns or Bust

26 Feb 2015 · 42 min
42:02

Panel discussion (Feb 26, 2015) with Jason Lemkin, David Sacks (Yammer/Zenefits) and Stewart Butterfield (Slack) on scaling revenue and product-led growth. Key points: mobile has materially changed virality since Yammer (launched Sept 2008); freemium can drive top-of-funnel but many enterprise deals still require people to midwife or close sales when purchases become enterprise-wide; Slack uses a primarily self-service model with account managers (no traditional outbound sales), introduced a paid tier called "Plus," and focuses on daily active users as a core KPI. Stewart described Slack's "Fair billing" (charge only for active users) to reduce friction and create goodwill; much of Slack's growth has come from Twitter and PR. David contrasted Yammer's later need for a formal sales organization and noted Zenefits' operational similarity to PayPal.

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