Fastly, the company responsible for the worldwide internet service disruption this week, stated that it was due to a software glitch that occurred when one of its clients changed their settings. The outage, which happened on Tuesday, raised questions about the internet's reliance on a few infrastructure companies. Fastly's issue caused high-traffic sites, including news outlets like The Guardian and The New York Times, as well as UK government sites, Reddit, and Amazon, to go down. The company’s Chief Engineering and Infrastructure Officer, Nick Rockwell, wrote in a blog post, "This was a widespread and severe outage, and we truly apologize for the impact it had on our customers and everyone who relies on them." He added that the problem should have been anticipated. Fastly operates a network of servers distributed in strategic locations around the world to help clients deliver and store content quickly and securely near end users. The company’s blog post provided a timeline of the events and promised to investigate and explain why the software glitch went undetected.