Kalanick has been under pressure from Uber's investors for a while.
Uber Technologies Inc chief executive Travis Kalanick, co-founder one of the most influential technology companies of its generation, resigned on Tuesday under mounting pressure from investors over his leadership.
Kalanick's departure caps a tumultuous period for the world's largest ride-services company, which upended the taxi industry and transportation regulations globally with Kalanick at the helm.
