We noticed our AZ server is not reachable at around 8.10 AM SGT and have contacted the DC for their followup to check.
We apologize for any inconvenience caused. Futher update will be provided in this announcemnet thread
8.10 AM SGT: monitoring reported down
8.20 AM SGT: Issue reported to the DC and awaiting their investigation
8.55 AM SGT: server is up. This was due to switch configuration on the DC side that was pushed earlier.