The 10 Biggest Cloud Outages of 2017 (So Far)

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AWS, February 28

This was the outage that shook the industry.

An Amazon Web Services engineer trying to debug an S3 storage system in the provider's Virginia data center accidentally typed a command incorrectly, and much of the Internet – including many enterprise platforms like Slack, Quora and Trello – was down for four hours.

The post-mortem said the employee was using "an established playbook," and intended to pull down a small number of servers that hosted subsystems for the billing process. Instead, the accidental command resulted in a far broader swath of servers being taken offline, including one subsystem necessary to serve specific requests for data storage functions and another allocating new storage.

The outage from a provider that owns roughly a third of the global cloud market reignited debate on the risks of public cloud.

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