About 20 percent of the web relies on Cloudflare to manage and protect traffic, a Cloudflare blog noted in July. Some intermediate fixes have been made, Cloudflare's status page said. But as of this writing, many sites remain down. According to DownDetector, Amazon, Spotify, Zoom, Uber, and Azure also experienced outages. "Given the importance of Cloudflare's services, any outage is unacceptable," Cloudflare's spokesperson said. "We apologize to our customers and the Internet in general for letting you down today. We will learn from today's incident and improve." Cloudflare will continue to update the status page as fixes come in, and a blog will be posted later today discussing the issue, the spokesperson told Ars.