Slack revenue growth fails to impress; scraps billings outlook

(Reuters) - Slack Technologies Inc on Thursday withdrew its 2021 billing outlook and reported a 50% jump in quarterly sales that failed to surpass lofty investor expectations driven by a surge in demand for workplace messaging platforms as more companies shift to remote work. Shares of the company, which had surged nearly 80% this year, dropped 16% in extended trading after Slack withdrew its forecast for billings citing uncertainty driven by the COVID-19 pandemic. Social distancing protocols..