https://www.reuters.com/article/us-slack-tech-results/slacks-quarterly-billing-growth-slows-due-to-covid-19-concessions-idUSKBN25Z344

Slack Technologies Inc's billing growth, a key indicator of future revenue, slowed in the second quarter and the workplace messaging app owner said it took a $11 million hit in the first half due to the COVID-19 related concessions.