Early last year, before the pandemic flipped the world upside down, you could have fit the entire global workforce of Zoom Video Communications on about 45 charter buses. By the end of January this year, though, it would have taken 79 buses to hold all of the videoconferencing provider’s employees, thanks to a whopping headcount increase of nearly 74% from a year earlier.

Zoom boasted by far the fastest hiring growth rate in The Information’s analysis of publicly traded tech companies over the pandemic year, a period of deep cutbacks in employment at many companies across the economy. At Zoom, though, it was a moment of off-the-charts growth in its business as the sudden explosion of remote work and education turned its product into a household name. Zoom was one of six tech companies we identified (see chart above) that ended their most recent quarters with over 40% more employees than they had prior to the pandemic, a list that also includes Amazon, Twilio, CrowdStrike, Cloudflare and Atlassian.