Maintenance error caused Facebook's 6-hour outage, company says
https://www.reuters.com/article/facebook-outages/maintenance-error-caused-facebooks-6-hour-outage-company-says-idUSKBN2GV24X
(Reuters) -Routine maintenance on Facebook's network stitching together its data centers caused Monday's collapse of its global system for more than six hours, the company said on Tuesday.