A hardware failure at an Amazon datacentre has downed several top web services, raising renewed concerns about the reliability of cloud-based infrastructure.
Instagram, Netflix, Twitter's Vine video-sharing application and holiday site Airbnb were among the services that were slow or inaccessible at the weekend because they all rely on Amazon Web Services.
The fault was traced to a datacentre in northern Virginia that was struggling to keep up with demand, according to the BBC.
After the problems were resolved, Amazon said the interruptions to service was caused by the "partial failure of a networking device" but gave no further details.
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The fault was linked to a network-attached block level storage service called Elastic Block Store (EBS) that is used for applications that need a database, file system or access to raw block level storage, according to the Register.
The weekend interruptions came less than a week after Amazon's North American web stores went offline for about 30 minutes, also due to problems in the company’s northern Virginia datacentre.
It followed a similar disruption on Google that lasted four minutes and reportedly caused a 40% drop in global internet traffic.
The service interruptions have highlighted the vulnerability of cloud-based services, showing that glitches at single datacentre can cause widespread disruptions.