List of Providers's System Status

Amazon AWS Services
https://status.aws.amazon.com/

BingAds
http://status.bingads.com/

Facebook APIs
https://developers.facebook.com/status/

Google Analytics & Others
https://www.google.com/appsstatus#hl=de&v=status

Google BigQuery & Others
https://status.cloud.google.com/

Mixpanel
https://status.mixpanel.com/

Pingdom
http://stats.pingdom.com

Zendesk & Zendesk Chat
https://status.zendesk.com