delta airlines 2016 power outage

A brief summary from CNN: http://money.cnn.com/2017/01/29/news/delta-system-outage/index.html

A more detailed WSJ article: https://www.wsj.com/articles/delta-air-lines-says-computers-down-everywhere-1470647527

And a more technical / opinion article from Wired: https://www.wired.com/2016/08/computer-outage-can-take-whole-airline/

Identify the cause of the failure and how it contributed to a failure in business continuity. How quickly was the problem(s) fixed?

Given that the failure has already occurred, assess how well the company responded? Be specific about the critical factors that failed.

Now, assume that since the failure happened the company has recovered from the event. Describe what you would do to improve business continuity. In your answer, you should consider existing processes and how those processes were flawed. Describe how you would improve those processes and why