AWS experienced a network and storage outage on Sunday, affecting some of its best-known services like Instagram, Vine, and IFTTT. The incident impacted 15-30 percent of one of the busiest data regions in the Amazon cloud, but the affected company's systems were able to withstand the interruption with minimal latency impact. The company uses Redis Cloud and Memcached Cloud services that rely on resources from the affected zone, but its in-memory databases are designed to operate without accessible storage, allowing them to work around the failure and recover themselves. The incident highlighted the importance of dynamic stability in system design and provided a test case for how such systems can cope with challenges when built for it.