The primary cause of the outage was a misconfigured network device in the Central US region, causing a cascading failure in routing tables and service unavailability. Automated failover system issues and a software bug in Azure's load balancing system further exacerbated the problem.
Challenges included complex mitigation, global coordination, diverse affected systems, and concurrent 'Blue Screen of Death' errors. Key takeaways emphasize the importance of business continuity planning, multi-cloud strategies, incident response plan testing, and transparent communication during outages.
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