Delta blames Microsoft and CrowdStrike for canceled flights

Microsoft denies Delta's claims regarding the recent IT outage

Delta CEO claims outage cost the airline $500 million

Microsoft argues other technology providers likely at fault

Microsoft claims Delta's IT system involves other providers

Delta blames Microsoft and CrowdStrike for canceled flights

 Delta possibly uses IBM systems, not    Microsoft Windows or Azure

Microsoft continues investigating the global outage circumstances

Delta allegedly failed to modernize its IT infrastructure

Delta states they've invested billions in IT infrastructure

CrowdStrike also disputes Delta's blame for the IT outage

Over 1 billion Windows-based computers crashed worldwide