This article from First Round Capital outlines the modern tech company approach: http://firstround.com/review/why-you-need-two-chiefs-in-the-executive-office/ h

This article from First Round Capital outlines the modern tech company approach: http://firstround.com/review/why-you-need-two-chiefs-in-the-executive-office/ http://firstround.com/review/why-you-need-two-chiefs-in-the-... Tl;dr - CoS stands in for the CEO in meetings, fills her in on what's going on across the organization (or outside of it), and overall leverages her time. It's beyond someone who just does scheduling but short of being COO, which entails direct reports and accountability.