In $2013,$ Zappos.com CEO Tony Hsieh decided to change the company's organizational structure to a system of self$-$organizing teams, rather than having power vested in a management hierarchy. $"$No job titles, no managers, no hierarchy" was the mantra. The transition was confusing and disorienting for many employees, who did not "buy in$"$ to the change. Hsieh made an ultimatum in $2015,$ asking employees to fully commit or quit, and $18\%($some estimates are greater$)$ of Zappos employees took a severance package and left the company. By $2020,$ the company had stepped away from the unusual organizational model. Hsieh left the company in August of that year, and tragically died in November $2020$ from injuries that resulted from an unexplained fire in a pool shed at a friend's home $.$ What was the name of the novel system for organizational structure in question? Multiple Choice Open source governance Holacracy Matrix structure Collaborative e$-$democracy Divisional structure