A widespread Microsoft Azure outage disrupted airline systems on the morning of October 29, taking down both Alaska Airlines (NYSE: ALK) and its subsidiary Hawaiian Airlines' websites, limiting functionality for customers across the board. Alaska Airlines called this incident its third major information technology (IT) to affecting their operations. This followed an incident just a few days ago on October 24 that led to over 400 cancellations and affected around 49,000 passengers, and led the airline to actually postpone its third-quarter earnings call.

Microsoft ultimately attributed today's event to an inadvertent configuration change that impacted its systems. This outage also hit other businesses and some global airlines, underscoring cloud concentration risk across the aviation

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