Facebook outage: what went wrong and why did it take so long to fix?

Billions of users were unable to access Facebook, Instagram and WhatsApp for hours while the social media giant scrambled to restore services

All of Facebook’s services were affected, not just Facebook.

Facebook and its other platforms, including Instagram, WhatsApp and Messenger, went down globally for close to six hours on Monday and Tuesday, depending on your time zone. 

As services are being restored, questions are being asked about what caused the outage, and why it took so long to fix.