How Zoom, Slack and GitHub Became Pandemic Lifelines

Six weeks ago, most people outside tech had never opened Zoom. Now it’s a verb in half the households I know. Zoom reported around 10 million daily meeting participants back in December. By April, that number had blown past 300 million. That’s not gradual adoption, that’s a category of software getting forced onto nearly everyone at once because the alternative — meeting in person — became unsafe or illegal depending on where you live.

It’s worth sitting with how strange this is. Video conferencing has existed for decades. Skype, WebEx, Google Hangouts, FaceTime — none of it ever became default infrastructure the way Zoom has in the space of a single quarter. The pandemic didn’t invent remote work tools, it just removed every excuse not to use them.

Three tools, three jobs

Zoom, Slack, and GitHub aren’t really competing with each other — they’ve ended up covering three distinct layers of how distributed teams operate. Zoom handles the synchronous stuff: standups, all-hands, the meetings that used to happen in conference rooms. Slack absorbed the hallway conversation, the quick question you’d normally lean over a desk to ask. And GitHub (along with the broader ecosystem around it) keeps the actual work — code, docs, project tracking — moving without anyone needing to be in the same building, or even the same time zone.

What’s interesting is that none of these were built specifically for a global lockdown scenario. They were built for companies that already had some remote workers, or distributed teams, or contractors. The pandemic just took tools designed for the edge case and made them the only case.

The obvious strain points

Scaling video infrastructure by 30x in a few months is not a small engineering problem. Zoom has spent weeks fielding scrutiny over security and privacy practices as its user base exploded past anything its architecture was originally sized for. That’s the tax you pay for sudden, forced-march growth — the same openness that let a teacher or a grandparent start a call in thirty seconds is what made it easy for uninvited guests to do the same thing before better defaults got shipped.

Slack and GitHub have had an easier time of it, partly because their growth, while real, hasn’t been quite as explosive, and partly because their user base already skewed toward people who understood the tools going in.

What happens after

The open question nobody can answer yet is how much of this sticks. Plenty of companies that swore remote work would never fly are currently running entirely fine without an office. Whether that turns into a permanent shift or snaps back the moment offices reopen is a genuinely open bet. My guess: it doesn’t fully snap back. Once a company has spent two months proving to itself that shipping code, running standups, and hitting deadlines can happen without anyone in a building together, that’s a hard thing to unlearn — even if hybrid arrangements end up being the more likely landing spot than fully remote for most teams.