On Monday (20), a failure in the Amazon Web Services (AWS) system caused a global outage that took thousands of websites and applications offline, including banking services and social networks.
Big tech revealed that the problem was caused by a bug in its automation software responsible for managing the domain name system (DNS) of the DynamoDB database.
According to AWS, the bug prevented the automatic correction of an empty DNS record in the data center in the US-East-1 region, in Virginia, which triggered a series of cascading failures.
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To contain the problem, the company has temporarily disabled its automated DNS planning and execution systems while it works on a permanent solution and strengthens protections against similar flaws.
The impact of the outage was felt by more than 2,000 companies, according to the website Downdetector, which monitors internet outages.
Among those affected were popular platforms such as Signal, Snapchat, Roblox and Duolingo, as well as banking services and smart doorbell maker Ring.
Users also reported difficulties accessing essential services and controlling connected devices, such as Eight Sleep’s smart beds, which were inoperable during the period.
AWS said it is committed to improving its systems to prevent future outages and has already implemented updates that allow basic control of devices connected via Bluetooth, even during connection drops.
