Bloomberg: “Multiple teams that were critical for keeping the service up and running are completely gone, or borrowing engineers from other groups, according to people familiar with the matter. That includes infrastructure teams to keep the main feed operational and maintain tweet databases…”
“That doesn’t mean that Twitter will shut down completely and unexpectedly. More likely, remaining employees will be unable to fix issues in the code and the site will start to lose some functionality, or be vulnerable to a major hack, technologists said.”
Washington Post: “Several critical teams essential to keeping the site functioning were cut to a single engineer or none by the departures Thursday, leaving the company partially on autopilot and likely to crash sooner or later, engineers said.”
New York Times: What employees does Twitter need anyway?